161881980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{207541}}^1$

素因数の和:207566

約数の個数: 48

約数和(自身を含む): 488138784

約数和(自身を除く): 326256804

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 207541, 415082, 622623, 830164, 1037705, 1245246, 2075410, 2490492, 2698033, 3113115, 4150820, 5396066, 6226230, 8094099, 10792132, 12452460, 13490165, 16188198, 26980330, 32376396, 40470495, 53960660, 80940990, 161881980]

約数ペア:

[(1, 161881980), (2, 80940990), (3, 53960660), (4, 40470495), (5, 32376396), (6, 26980330), (10, 16188198), (12, 13490165), (13, 12452460), (15, 10792132), (20, 8094099), (26, 6226230), (30, 5396066), (39, 4150820), (52, 3113115), (60, 2698033), (65, 2490492), (78, 2075410), (130, 1245246), (156, 1037705), (195, 830164), (260, 622623), (390, 415082), (780, 207541)]