64403840

素因数分解:

$2^7\times 5^1\times {\mathrm{103}}^1\times {\mathrm{977}}^1$

素因数の和:1099

約数の個数: 64

約数和(自身を含む): 155619360

約数和(自身を除く): 91215520

約数列:

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

約数ペア:

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