21504210

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7877}}^1$

素因数の和:7907

約数の個数: 64

約数和(自身を含む): 63528192

約数和(自身を除く): 42023982

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, 7877, 15754, 23631, 39385, 47262, 55139, 78770, 102401, 110278, 118155, 165417, 204802, 236310, 275695, 307203, 330834, 512005, 551390, 614406, 716807, 827085, 1024010, 1433614, 1536015, 1654170, 2150421, 3072030, 3584035, 4300842, 7168070, 10752105, 21504210]

約数ペア:

[(1, 21504210), (2, 10752105), (3, 7168070), (5, 4300842), (6, 3584035), (7, 3072030), (10, 2150421), (13, 1654170), (14, 1536015), (15, 1433614), (21, 1024010), (26, 827085), (30, 716807), (35, 614406), (39, 551390), (42, 512005), (65, 330834), (70, 307203), (78, 275695), (91, 236310), (105, 204802), (130, 165417), (182, 118155), (195, 110278), (210, 102401), (273, 78770), (390, 55139), (455, 47262), (546, 39385), (910, 23631), (1365, 15754), (2730, 7877)]