30911480

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{457}}^1$

素因数の和:576

約数の個数: 64

約数和(自身を含む): 74196000

約数和(自身を除く): 43284520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 89, 95, 152, 178, 190, 356, 380, 445, 457, 712, 760, 890, 914, 1691, 1780, 1828, 2285, 3382, 3560, 3656, 4570, 6764, 8455, 8683, 9140, 13528, 16910, 17366, 18280, 33820, 34732, 40673, 43415, 67640, 69464, 81346, 86830, 162692, 173660, 203365, 325384, 347320, 406730, 772787, 813460, 1545574, 1626920, 3091148, 3863935, 6182296, 7727870, 15455740, 30911480]

約数ペア:

[(1, 30911480), (2, 15455740), (4, 7727870), (5, 6182296), (8, 3863935), (10, 3091148), (19, 1626920), (20, 1545574), (38, 813460), (40, 772787), (76, 406730), (89, 347320), (95, 325384), (152, 203365), (178, 173660), (190, 162692), (356, 86830), (380, 81346), (445, 69464), (457, 67640), (712, 43415), (760, 40673), (890, 34732), (914, 33820), (1691, 18280), (1780, 17366), (1828, 16910), (2285, 13528), (3382, 9140), (3560, 8683), (3656, 8455), (4570, 6764)]