31660040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{233}}^1$

素因数の和:366

約数の個数: 64

約数和(自身を含む): 74131200

約数和(自身を除く): 42471160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 79, 86, 158, 172, 215, 233, 316, 344, 395, 430, 466, 632, 790, 860, 932, 1165, 1580, 1720, 1864, 2330, 3160, 3397, 4660, 6794, 9320, 10019, 13588, 16985, 18407, 20038, 27176, 33970, 36814, 40076, 50095, 67940, 73628, 80152, 92035, 100190, 135880, 147256, 184070, 200380, 368140, 400760, 736280, 791501, 1583002, 3166004, 3957505, 6332008, 7915010, 15830020, 31660040]

約数ペア:

[(1, 31660040), (2, 15830020), (4, 7915010), (5, 6332008), (8, 3957505), (10, 3166004), (20, 1583002), (40, 791501), (43, 736280), (79, 400760), (86, 368140), (158, 200380), (172, 184070), (215, 147256), (233, 135880), (316, 100190), (344, 92035), (395, 80152), (430, 73628), (466, 67940), (632, 50095), (790, 40076), (860, 36814), (932, 33970), (1165, 27176), (1580, 20038), (1720, 18407), (1864, 16985), (2330, 13588), (3160, 10019), (3397, 9320), (4660, 6794)]