21764210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:323

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 23958670

約数列:

[1, 2, 5, 10, 13, 23, 26, 29, 46, 58, 65, 115, 130, 145, 230, 251, 290, 299, 377, 502, 598, 667, 754, 1255, 1334, 1495, 1885, 2510, 2990, 3263, 3335, 3770, 5773, 6526, 6670, 7279, 8671, 11546, 14558, 16315, 17342, 28865, 32630, 36395, 43355, 57730, 72790, 75049, 86710, 94627, 150098, 167417, 189254, 334834, 375245, 473135, 750490, 837085, 946270, 1674170, 2176421, 4352842, 10882105, 21764210]

約数ペア:

[(1, 21764210), (2, 10882105), (5, 4352842), (10, 2176421), (13, 1674170), (23, 946270), (26, 837085), (29, 750490), (46, 473135), (58, 375245), (65, 334834), (115, 189254), (130, 167417), (145, 150098), (230, 94627), (251, 86710), (290, 75049), (299, 72790), (377, 57730), (502, 43355), (598, 36395), (667, 32630), (754, 28865), (1255, 17342), (1334, 16315), (1495, 14558), (1885, 11546), (2510, 8671), (2990, 7279), (3263, 6670), (3335, 6526), (3770, 5773)]