21755175

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{421}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 39559968

約数和(自身を除く): 17804793

約数列:

[1, 3, 5, 13, 15, 25, 39, 53, 65, 75, 159, 195, 265, 325, 421, 689, 795, 975, 1263, 1325, 2067, 2105, 3445, 3975, 5473, 6315, 10335, 10525, 16419, 17225, 22313, 27365, 31575, 51675, 66939, 82095, 111565, 136825, 290069, 334695, 410475, 557825, 870207, 1450345, 1673475, 4351035, 7251725, 21755175]

約数ペア:

[(1, 21755175), (3, 7251725), (5, 4351035), (13, 1673475), (15, 1450345), (25, 870207), (39, 557825), (53, 410475), (65, 334695), (75, 290069), (159, 136825), (195, 111565), (265, 82095), (325, 66939), (421, 51675), (689, 31575), (795, 27365), (975, 22313), (1263, 17225), (1325, 16419), (2067, 10525), (2105, 10335), (3445, 6315), (3975, 5473)]