19993740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25633}}^1$

素因数の和:25658

約数の個数: 48

約数和(自身を含む): 60291168

約数和(自身を除く): 40297428

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, 25633, 51266, 76899, 102532, 128165, 153798, 256330, 307596, 333229, 384495, 512660, 666458, 768990, 999687, 1332916, 1537980, 1666145, 1999374, 3332290, 3998748, 4998435, 6664580, 9996870, 19993740]

約数ペア:

[(1, 19993740), (2, 9996870), (3, 6664580), (4, 4998435), (5, 3998748), (6, 3332290), (10, 1999374), (12, 1666145), (13, 1537980), (15, 1332916), (20, 999687), (26, 768990), (30, 666458), (39, 512660), (52, 384495), (60, 333229), (65, 307596), (78, 256330), (130, 153798), (156, 128165), (195, 102532), (260, 76899), (390, 51266), (780, 25633)]