19992570

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{51263}}^1$

素因数の和:51286

約数の個数: 32

約数和(自身を含む): 51674112

約数和(自身を除く): 31681542

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 51263, 102526, 153789, 256315, 307578, 512630, 666419, 768945, 1332838, 1537890, 1999257, 3332095, 3998514, 6664190, 9996285, 19992570]

約数ペア:

[(1, 19992570), (2, 9996285), (3, 6664190), (5, 3998514), (6, 3332095), (10, 1999257), (13, 1537890), (15, 1332838), (26, 768945), (30, 666419), (39, 512630), (65, 307578), (78, 256315), (130, 153789), (195, 102526), (390, 51263)]