20800160

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1831}}^1$

素因数の和:1917

約数の個数: 48

約数和(自身を含む): 49859712

約数和(自身を除く): 29059552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 1831, 2272, 2840, 3662, 5680, 7324, 9155, 11360, 14648, 18310, 29296, 36620, 58592, 73240, 130001, 146480, 260002, 292960, 520004, 650005, 1040008, 1300010, 2080016, 2600020, 4160032, 5200040, 10400080, 20800160]

約数ペア:

[(1, 20800160), (2, 10400080), (4, 5200040), (5, 4160032), (8, 2600020), (10, 2080016), (16, 1300010), (20, 1040008), (32, 650005), (40, 520004), (71, 292960), (80, 260002), (142, 146480), (160, 130001), (284, 73240), (355, 58592), (568, 36620), (710, 29296), (1136, 18310), (1420, 14648), (1831, 11360), (2272, 9155), (2840, 7324), (3662, 5680)]