257615360

素因数分解:

$2^9\times 5^1\times {\mathrm{103}}^1\times {\mathrm{977}}^1$

素因数の和:1103

約数の個数: 80

約数和(自身を含む): 624308256

約数和(自身を除く): 366692896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 103, 128, 160, 206, 256, 320, 412, 512, 515, 640, 824, 977, 1030, 1280, 1648, 1954, 2060, 2560, 3296, 3908, 4120, 4885, 6592, 7816, 8240, 9770, 13184, 15632, 16480, 19540, 26368, 31264, 32960, 39080, 52736, 62528, 65920, 78160, 100631, 125056, 131840, 156320, 201262, 250112, 263680, 312640, 402524, 500224, 503155, 625280, 805048, 1006310, 1250560, 1610096, 2012620, 2501120, 3220192, 4025240, 6440384, 8050480, 12880768, 16100960, 25761536, 32201920, 51523072, 64403840, 128807680, 257615360]

約数ペア:

[(1, 257615360), (2, 128807680), (4, 64403840), (5, 51523072), (8, 32201920), (10, 25761536), (16, 16100960), (20, 12880768), (32, 8050480), (40, 6440384), (64, 4025240), (80, 3220192), (103, 2501120), (128, 2012620), (160, 1610096), (206, 1250560), (256, 1006310), (320, 805048), (412, 625280), (512, 503155), (515, 500224), (640, 402524), (824, 312640), (977, 263680), (1030, 250112), (1280, 201262), (1648, 156320), (1954, 131840), (2060, 125056), (2560, 100631), (3296, 78160), (3908, 65920), (4120, 62528), (4885, 52736), (6592, 39080), (7816, 32960), (8240, 31264), (9770, 26368), (13184, 19540), (15632, 16480)]