388693880

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1\times {\mathrm{1451}}^1$

素因数の和:1680

約数の個数: 64

約数和(自身を含む): 903782880

約数和(自身を除く): 515089000

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 181, 185, 296, 362, 370, 724, 740, 905, 1448, 1451, 1480, 1810, 2902, 3620, 5804, 6697, 7240, 7255, 11608, 13394, 14510, 26788, 29020, 33485, 53576, 53687, 58040, 66970, 107374, 133940, 214748, 262631, 267880, 268435, 429496, 525262, 536870, 1050524, 1073740, 1313155, 2101048, 2147480, 2626310, 5252620, 9717347, 10505240, 19434694, 38869388, 48586735, 77738776, 97173470, 194346940, 388693880]

約数ペア:

[(1, 388693880), (2, 194346940), (4, 97173470), (5, 77738776), (8, 48586735), (10, 38869388), (20, 19434694), (37, 10505240), (40, 9717347), (74, 5252620), (148, 2626310), (181, 2147480), (185, 2101048), (296, 1313155), (362, 1073740), (370, 1050524), (724, 536870), (740, 525262), (905, 429496), (1448, 268435), (1451, 267880), (1480, 262631), (1810, 214748), (2902, 133940), (3620, 107374), (5804, 66970), (6697, 58040), (7240, 53687), (7255, 53576), (11608, 33485), (13394, 29020), (14510, 26788)]