20884920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{47}}^1$

素因数の和:114

約数の個数: 192

約数和(自身を含む): 76446720

約数和(自身を除く): 55561800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 47, 56, 60, 69, 70, 84, 92, 94, 105, 115, 120, 138, 140, 141, 161, 168, 184, 188, 210, 230, 235, 276, 280, 282, 322, 329, 345, 376, 420, 460, 470, 483, 529, 552, 564, 644, 658, 690, 705, 805, 840, 920, 940, 966, 987, 1058, 1081, 1128, 1288, 1316, 1380, 1410, 1587, 1610, 1645, 1880, 1932, 1974, 2116, 2162, 2415, 2632, 2645, 2760, 2820, 3174, 3220, 3243, 3290, 3703, 3864, 3948, 4232, 4324, 4830, 4935, 5290, 5405, 5640, 6348, 6440, 6486, 6580, 7406, 7567, 7896, 7935, 8648, 9660, 9870, 10580, 10810, 11109, 12696, 12972, 13160, 14812, 15134, 15870, 16215, 18515, 19320, 19740, 21160, 21620, 22218, 22701, 24863, 25944, 29624, 30268, 31740, 32430, 37030, 37835, 39480, 43240, 44436, 45402, 49726, 55545, 60536, 63480, 64860, 74060, 74589, 75670, 88872, 90804, 99452, 111090, 113505, 124315, 129720, 148120, 149178, 151340, 174041, 181608, 198904, 222180, 227010, 248630, 298356, 302680, 348082, 372945, 444360, 454020, 497260, 522123, 596712, 696164, 745890, 870205, 908040, 994520, 1044246, 1392328, 1491780, 1740410, 2088492, 2610615, 2983560, 3480820, 4176984, 5221230, 6961640, 10442460, 20884920]

約数ペア:

[(1, 20884920), (2, 10442460), (3, 6961640), (4, 5221230), (5, 4176984), (6, 3480820), (7, 2983560), (8, 2610615), (10, 2088492), (12, 1740410), (14, 1491780), (15, 1392328), (20, 1044246), (21, 994520), (23, 908040), (24, 870205), (28, 745890), (30, 696164), (35, 596712), (40, 522123), (42, 497260), (46, 454020), (47, 444360), (56, 372945), (60, 348082), (69, 302680), (70, 298356), (84, 248630), (92, 227010), (94, 222180), (105, 198904), (115, 181608), (120, 174041), (138, 151340), (140, 149178), (141, 148120), (161, 129720), (168, 124315), (184, 113505), (188, 111090), (210, 99452), (230, 90804), (235, 88872), (276, 75670), (280, 74589), (282, 74060), (322, 64860), (329, 63480), (345, 60536), (376, 55545), (420, 49726), (460, 45402), (470, 44436), (483, 43240), (529, 39480), (552, 37835), (564, 37030), (644, 32430), (658, 31740), (690, 30268), (705, 29624), (805, 25944), (840, 24863), (920, 22701), (940, 22218), (966, 21620), (987, 21160), (1058, 19740), (1081, 19320), (1128, 18515), (1288, 16215), (1316, 15870), (1380, 15134), (1410, 14812), (1587, 13160), (1610, 12972), (1645, 12696), (1880, 11109), (1932, 10810), (1974, 10580), (2116, 9870), (2162, 9660), (2415, 8648), (2632, 7935), (2645, 7896), (2760, 7567), (2820, 7406), (3174, 6580), (3220, 6486), (3243, 6440), (3290, 6348), (3703, 5640), (3864, 5405), (3948, 5290), (4232, 4935), (4324, 4830)]