21955570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1049}}^1$

素因数の和:1099

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 28847630

約数列:

[1, 2, 5, 7, 10, 13, 14, 23, 26, 35, 46, 65, 70, 91, 115, 130, 161, 182, 230, 299, 322, 455, 598, 805, 910, 1049, 1495, 1610, 2093, 2098, 2990, 4186, 5245, 7343, 10465, 10490, 13637, 14686, 20930, 24127, 27274, 36715, 48254, 68185, 73430, 95459, 120635, 136370, 168889, 190918, 241270, 313651, 337778, 477295, 627302, 844445, 954590, 1568255, 1688890, 2195557, 3136510, 4391114, 10977785, 21955570]

約数ペア:

[(1, 21955570), (2, 10977785), (5, 4391114), (7, 3136510), (10, 2195557), (13, 1688890), (14, 1568255), (23, 954590), (26, 844445), (35, 627302), (46, 477295), (65, 337778), (70, 313651), (91, 241270), (115, 190918), (130, 168889), (161, 136370), (182, 120635), (230, 95459), (299, 73430), (322, 68185), (455, 48254), (598, 36715), (805, 27274), (910, 24127), (1049, 20930), (1495, 14686), (1610, 13637), (2093, 10490), (2098, 10465), (2990, 7343), (4186, 5245)]