21055860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{983}}^1$

素因数の和:1022

約数の個数: 144

約数和(自身を含む): 77366016

約数和(自身を除く): 56310156

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 28, 30, 34, 35, 36, 42, 45, 51, 60, 63, 68, 70, 84, 85, 90, 102, 105, 119, 126, 140, 153, 170, 180, 204, 210, 238, 252, 255, 306, 315, 340, 357, 420, 476, 510, 595, 612, 630, 714, 765, 983, 1020, 1071, 1190, 1260, 1428, 1530, 1785, 1966, 2142, 2380, 2949, 3060, 3570, 3932, 4284, 4915, 5355, 5898, 6881, 7140, 8847, 9830, 10710, 11796, 13762, 14745, 16711, 17694, 19660, 20643, 21420, 27524, 29490, 33422, 34405, 35388, 41286, 44235, 50133, 58980, 61929, 66844, 68810, 82572, 83555, 88470, 100266, 103215, 116977, 123858, 137620, 150399, 167110, 176940, 200532, 206430, 233954, 247716, 250665, 300798, 309645, 334220, 350931, 412860, 467908, 501330, 584885, 601596, 619290, 701862, 751995, 1002660, 1052793, 1169770, 1238580, 1403724, 1503990, 1754655, 2105586, 2339540, 3007980, 3509310, 4211172, 5263965, 7018620, 10527930, 21055860]

約数ペア:

[(1, 21055860), (2, 10527930), (3, 7018620), (4, 5263965), (5, 4211172), (6, 3509310), (7, 3007980), (9, 2339540), (10, 2105586), (12, 1754655), (14, 1503990), (15, 1403724), (17, 1238580), (18, 1169770), (20, 1052793), (21, 1002660), (28, 751995), (30, 701862), (34, 619290), (35, 601596), (36, 584885), (42, 501330), (45, 467908), (51, 412860), (60, 350931), (63, 334220), (68, 309645), (70, 300798), (84, 250665), (85, 247716), (90, 233954), (102, 206430), (105, 200532), (119, 176940), (126, 167110), (140, 150399), (153, 137620), (170, 123858), (180, 116977), (204, 103215), (210, 100266), (238, 88470), (252, 83555), (255, 82572), (306, 68810), (315, 66844), (340, 61929), (357, 58980), (420, 50133), (476, 44235), (510, 41286), (595, 35388), (612, 34405), (630, 33422), (714, 29490), (765, 27524), (983, 21420), (1020, 20643), (1071, 19660), (1190, 17694), (1260, 16711), (1428, 14745), (1530, 13762), (1785, 11796), (1966, 10710), (2142, 9830), (2380, 8847), (2949, 7140), (3060, 6881), (3570, 5898), (3932, 5355), (4284, 4915)]