21539850160

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1651829}}^1$

素因数の和:1652005

約数の個数: 40

約数和(自身を含む): 50387422320

約数和(自身を除く): 28847572160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1630, 2608, 3260, 6520, 13040, 1651829, 3303658, 6607316, 8259145, 13214632, 16518290, 26429264, 33036580, 66073160, 132146320, 269248127, 538496254, 1076992508, 1346240635, 2153985016, 2692481270, 4307970032, 5384962540, 10769925080, 21539850160]

約数ペア:

[(1, 21539850160), (2, 10769925080), (4, 5384962540), (5, 4307970032), (8, 2692481270), (10, 2153985016), (16, 1346240635), (20, 1076992508), (40, 538496254), (80, 269248127), (163, 132146320), (326, 66073160), (652, 33036580), (815, 26429264), (1304, 16518290), (1630, 13214632), (2608, 8259145), (3260, 6607316), (6520, 3303658), (13040, 1651829)]