21403690

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{19}}^2$

素因数の和:81

約数の個数: 108

約数和(自身を含む): 51990498

約数和(自身を除く): 30586808

約数列:

[1, 2, 5, 7, 10, 11, 14, 19, 22, 35, 38, 49, 55, 70, 77, 95, 98, 110, 121, 133, 154, 190, 209, 242, 245, 266, 361, 385, 418, 490, 539, 605, 665, 722, 770, 847, 931, 1045, 1078, 1210, 1330, 1463, 1694, 1805, 1862, 2090, 2299, 2527, 2695, 2926, 3610, 3971, 4235, 4598, 4655, 5054, 5390, 5929, 7315, 7942, 8470, 9310, 10241, 11495, 11858, 12635, 14630, 16093, 17689, 19855, 20482, 22990, 25270, 27797, 29645, 32186, 35378, 39710, 43681, 51205, 55594, 59290, 80465, 87362, 88445, 102410, 112651, 138985, 160930, 176890, 194579, 218405, 225302, 277970, 305767, 389158, 436810, 563255, 611534, 972895, 1126510, 1528835, 1945790, 2140369, 3057670, 4280738, 10701845, 21403690]

約数ペア:

[(1, 21403690), (2, 10701845), (5, 4280738), (7, 3057670), (10, 2140369), (11, 1945790), (14, 1528835), (19, 1126510), (22, 972895), (35, 611534), (38, 563255), (49, 436810), (55, 389158), (70, 305767), (77, 277970), (95, 225302), (98, 218405), (110, 194579), (121, 176890), (133, 160930), (154, 138985), (190, 112651), (209, 102410), (242, 88445), (245, 87362), (266, 80465), (361, 59290), (385, 55594), (418, 51205), (490, 43681), (539, 39710), (605, 35378), (665, 32186), (722, 29645), (770, 27797), (847, 25270), (931, 22990), (1045, 20482), (1078, 19855), (1210, 17689), (1330, 16093), (1463, 14630), (1694, 12635), (1805, 11858), (1862, 11495), (2090, 10241), (2299, 9310), (2527, 8470), (2695, 7942), (2926, 7315), (3610, 5929), (3971, 5390), (4235, 5054), (4598, 4655)]