21640710

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7927}}^1$

素因数の和:7957

約数の個数: 64

約数和(自身を含む): 63931392

約数和(自身を除く): 42290682

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 91, 105, 130, 182, 195, 210, 273, 390, 455, 546, 910, 1365, 2730, 7927, 15854, 23781, 39635, 47562, 55489, 79270, 103051, 110978, 118905, 166467, 206102, 237810, 277445, 309153, 332934, 515255, 554890, 618306, 721357, 832335, 1030510, 1442714, 1545765, 1664670, 2164071, 3091530, 3606785, 4328142, 7213570, 10820355, 21640710]

約数ペア:

[(1, 21640710), (2, 10820355), (3, 7213570), (5, 4328142), (6, 3606785), (7, 3091530), (10, 2164071), (13, 1664670), (14, 1545765), (15, 1442714), (21, 1030510), (26, 832335), (30, 721357), (35, 618306), (39, 554890), (42, 515255), (65, 332934), (70, 309153), (78, 277445), (91, 237810), (105, 206102), (130, 166467), (182, 118905), (195, 110978), (210, 103051), (273, 79270), (390, 55489), (455, 47562), (546, 39635), (910, 23781), (1365, 15854), (2730, 7927)]