30997640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^2\times {\mathrm{461}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 71642340

約数和(自身を除く): 40644700

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 461, 820, 922, 1640, 1681, 1844, 2305, 3362, 3688, 4610, 6724, 8405, 9220, 13448, 16810, 18440, 18901, 33620, 37802, 67240, 75604, 94505, 151208, 189010, 378020, 756040, 774941, 1549882, 3099764, 3874705, 6199528, 7749410, 15498820, 30997640]

約数ペア:

[(1, 30997640), (2, 15498820), (4, 7749410), (5, 6199528), (8, 3874705), (10, 3099764), (20, 1549882), (40, 774941), (41, 756040), (82, 378020), (164, 189010), (205, 151208), (328, 94505), (410, 75604), (461, 67240), (820, 37802), (922, 33620), (1640, 18901), (1681, 18440), (1844, 16810), (2305, 13448), (3362, 9220), (3688, 8405), (4610, 6724)]