19992420

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:112

約数の個数: 240

約数和(自身を含む): 75132288

約数和(自身を除く): 55139868

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 41, 42, 43, 45, 54, 60, 63, 70, 81, 82, 84, 86, 90, 105, 108, 123, 126, 129, 135, 140, 162, 164, 172, 180, 189, 205, 210, 215, 246, 252, 258, 270, 287, 301, 315, 324, 369, 378, 387, 405, 410, 420, 430, 492, 516, 540, 567, 574, 602, 615, 630, 645, 738, 756, 774, 810, 820, 860, 861, 903, 945, 1107, 1134, 1148, 1161, 1204, 1230, 1260, 1290, 1435, 1476, 1505, 1548, 1620, 1722, 1763, 1806, 1845, 1890, 1935, 2214, 2268, 2322, 2460, 2580, 2583, 2709, 2835, 2870, 3010, 3321, 3444, 3483, 3526, 3612, 3690, 3780, 3870, 4305, 4428, 4515, 4644, 5166, 5289, 5418, 5535, 5670, 5740, 5805, 6020, 6642, 6966, 7052, 7380, 7740, 7749, 8127, 8610, 8815, 9030, 10332, 10578, 10836, 11070, 11340, 11610, 12341, 12915, 13284, 13545, 13932, 15498, 15867, 16254, 16605, 17220, 17415, 17630, 18060, 21156, 22140, 23220, 23247, 24381, 24682, 25830, 26445, 27090, 30996, 31734, 32508, 33210, 34830, 35260, 37023, 38745, 40635, 46494, 47601, 48762, 49364, 51660, 52890, 54180, 61705, 63468, 66420, 69660, 74046, 77490, 79335, 81270, 92988, 95202, 97524, 105780, 111069, 116235, 121905, 123410, 142803, 148092, 154980, 158670, 162540, 185115, 190404, 222138, 232470, 238005, 243810, 246820, 285606, 317340, 333207, 370230, 444276, 464940, 476010, 487620, 555345, 571212, 666414, 714015, 740460, 952020, 999621, 1110690, 1332828, 1428030, 1666035, 1999242, 2221380, 2856060, 3332070, 3998484, 4998105, 6664140, 9996210, 19992420]

約数ペア:

[(1, 19992420), (2, 9996210), (3, 6664140), (4, 4998105), (5, 3998484), (6, 3332070), (7, 2856060), (9, 2221380), (10, 1999242), (12, 1666035), (14, 1428030), (15, 1332828), (18, 1110690), (20, 999621), (21, 952020), (27, 740460), (28, 714015), (30, 666414), (35, 571212), (36, 555345), (41, 487620), (42, 476010), (43, 464940), (45, 444276), (54, 370230), (60, 333207), (63, 317340), (70, 285606), (81, 246820), (82, 243810), (84, 238005), (86, 232470), (90, 222138), (105, 190404), (108, 185115), (123, 162540), (126, 158670), (129, 154980), (135, 148092), (140, 142803), (162, 123410), (164, 121905), (172, 116235), (180, 111069), (189, 105780), (205, 97524), (210, 95202), (215, 92988), (246, 81270), (252, 79335), (258, 77490), (270, 74046), (287, 69660), (301, 66420), (315, 63468), (324, 61705), (369, 54180), (378, 52890), (387, 51660), (405, 49364), (410, 48762), (420, 47601), (430, 46494), (492, 40635), (516, 38745), (540, 37023), (567, 35260), (574, 34830), (602, 33210), (615, 32508), (630, 31734), (645, 30996), (738, 27090), (756, 26445), (774, 25830), (810, 24682), (820, 24381), (860, 23247), (861, 23220), (903, 22140), (945, 21156), (1107, 18060), (1134, 17630), (1148, 17415), (1161, 17220), (1204, 16605), (1230, 16254), (1260, 15867), (1290, 15498), (1435, 13932), (1476, 13545), (1505, 13284), (1548, 12915), (1620, 12341), (1722, 11610), (1763, 11340), (1806, 11070), (1845, 10836), (1890, 10578), (1935, 10332), (2214, 9030), (2268, 8815), (2322, 8610), (2460, 8127), (2580, 7749), (2583, 7740), (2709, 7380), (2835, 7052), (2870, 6966), (3010, 6642), (3321, 6020), (3444, 5805), (3483, 5740), (3526, 5670), (3612, 5535), (3690, 5418), (3780, 5289), (3870, 5166), (4305, 4644), (4428, 4515)]