21312375

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{353}}^1$

素因数の和:401

約数の個数: 64

約数和(自身を含む): 42412032

約数和(自身を除く): 21099657

約数列:

[1, 3, 5, 7, 15, 21, 23, 25, 35, 69, 75, 105, 115, 125, 161, 175, 345, 353, 375, 483, 525, 575, 805, 875, 1059, 1725, 1765, 2415, 2471, 2625, 2875, 4025, 5295, 7413, 8119, 8625, 8825, 12075, 12355, 20125, 24357, 26475, 37065, 40595, 44125, 56833, 60375, 61775, 121785, 132375, 170499, 185325, 202975, 284165, 308875, 608925, 852495, 926625, 1014875, 1420825, 3044625, 4262475, 7104125, 21312375]

約数ペア:

[(1, 21312375), (3, 7104125), (5, 4262475), (7, 3044625), (15, 1420825), (21, 1014875), (23, 926625), (25, 852495), (35, 608925), (69, 308875), (75, 284165), (105, 202975), (115, 185325), (125, 170499), (161, 132375), (175, 121785), (345, 61775), (353, 60375), (375, 56833), (483, 44125), (525, 40595), (575, 37065), (805, 26475), (875, 24357), (1059, 20125), (1725, 12355), (1765, 12075), (2415, 8825), (2471, 8625), (2625, 8119), (2875, 7413), (4025, 5295)]