646760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:90

約数の個数: 64

約数和(自身を含む): 1641600

約数和(自身を除く): 994840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 37, 38, 40, 46, 74, 76, 92, 95, 115, 148, 152, 184, 185, 190, 230, 296, 370, 380, 437, 460, 703, 740, 760, 851, 874, 920, 1406, 1480, 1702, 1748, 2185, 2812, 3404, 3496, 3515, 4255, 4370, 5624, 6808, 7030, 8510, 8740, 14060, 16169, 17020, 17480, 28120, 32338, 34040, 64676, 80845, 129352, 161690, 323380, 646760]

約数ペア:

[(1, 646760), (2, 323380), (4, 161690), (5, 129352), (8, 80845), (10, 64676), (19, 34040), (20, 32338), (23, 28120), (37, 17480), (38, 17020), (40, 16169), (46, 14060), (74, 8740), (76, 8510), (92, 7030), (95, 6808), (115, 5624), (148, 4370), (152, 4255), (184, 3515), (185, 3496), (190, 3404), (230, 2812), (296, 2185), (370, 1748), (380, 1702), (437, 1480), (460, 1406), (703, 920), (740, 874), (760, 851)]