30917240

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{12671}}^1$

素因数の和:12743

約数の個数: 32

約数和(自身を含む): 70709760

約数和(自身を除く): 39792520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 12671, 25342, 50684, 63355, 101368, 126710, 253420, 506840, 772931, 1545862, 3091724, 3864655, 6183448, 7729310, 15458620, 30917240]

約数ペア:

[(1, 30917240), (2, 15458620), (4, 7729310), (5, 6183448), (8, 3864655), (10, 3091724), (20, 1545862), (40, 772931), (61, 506840), (122, 253420), (244, 126710), (305, 101368), (488, 63355), (610, 50684), (1220, 25342), (2440, 12671)]