639885740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2461099}}^1$

素因数の和:2461121

約数の個数: 24

約数和(自身を含む): 1447126800

約数和(自身を除く): 807241060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2461099, 4922198, 9844396, 12305495, 24610990, 31994287, 49221980, 63988574, 127977148, 159971435, 319942870, 639885740]

約数ペア:

[(1, 639885740), (2, 319942870), (4, 159971435), (5, 127977148), (10, 63988574), (13, 49221980), (20, 31994287), (26, 24610990), (52, 12305495), (65, 9844396), (130, 4922198), (260, 2461099)]