639202330

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{158611}}^1$

素因数の和:158662

約数の個数: 32

約数和(自身を含む): 1279047168

約数和(自身を除く): 639844838

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 158611, 317222, 793055, 1586110, 2061943, 4123886, 4916941, 9833882, 10309715, 20619430, 24584705, 49169410, 63920233, 127840466, 319601165, 639202330]

約数ペア:

[(1, 639202330), (2, 319601165), (5, 127840466), (10, 63920233), (13, 49169410), (26, 24584705), (31, 20619430), (62, 10309715), (65, 9833882), (130, 4916941), (155, 4123886), (310, 2061943), (403, 1586110), (806, 793055), (2015, 317222), (4030, 158611)]