25540090

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{281}}^1$

素因数の和:498

約数の個数: 32

約数和(自身を含む): 47206800

約数和(自身を除く): 21666710

約数列:

[1, 2, 5, 10, 61, 122, 149, 281, 298, 305, 562, 610, 745, 1405, 1490, 2810, 9089, 17141, 18178, 34282, 41869, 45445, 83738, 85705, 90890, 171410, 209345, 418690, 2554009, 5108018, 12770045, 25540090]

約数ペア:

[(1, 25540090), (2, 12770045), (5, 5108018), (10, 2554009), (61, 418690), (122, 209345), (149, 171410), (281, 90890), (298, 85705), (305, 83738), (562, 45445), (610, 41869), (745, 34282), (1405, 18178), (1490, 17141), (2810, 9089)]