85281640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{349}}^1$

素因数の和:550

約数の個数: 64

約数和(自身を含む): 198450000

約数和(自身を除く): 113168360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 149, 164, 205, 298, 328, 349, 410, 596, 698, 745, 820, 1192, 1396, 1490, 1640, 1745, 2792, 2980, 3490, 5960, 6109, 6980, 12218, 13960, 14309, 24436, 28618, 30545, 48872, 52001, 57236, 61090, 71545, 104002, 114472, 122180, 143090, 208004, 244360, 260005, 286180, 416008, 520010, 572360, 1040020, 2080040, 2132041, 4264082, 8528164, 10660205, 17056328, 21320410, 42640820, 85281640]

約数ペア:

[(1, 85281640), (2, 42640820), (4, 21320410), (5, 17056328), (8, 10660205), (10, 8528164), (20, 4264082), (40, 2132041), (41, 2080040), (82, 1040020), (149, 572360), (164, 520010), (205, 416008), (298, 286180), (328, 260005), (349, 244360), (410, 208004), (596, 143090), (698, 122180), (745, 114472), (820, 104002), (1192, 71545), (1396, 61090), (1490, 57236), (1640, 52001), (1745, 48872), (2792, 30545), (2980, 28618), (3490, 24436), (5960, 14309), (6109, 13960), (6980, 12218)]