20689660

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{383}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 45351936

約数和(自身を除く): 24662276

約数列:

[1, 2, 4, 5, 10, 20, 37, 73, 74, 146, 148, 185, 292, 365, 370, 383, 730, 740, 766, 1460, 1532, 1915, 2701, 3830, 5402, 7660, 10804, 13505, 14171, 27010, 27959, 28342, 54020, 55918, 56684, 70855, 111836, 139795, 141710, 279590, 283420, 559180, 1034483, 2068966, 4137932, 5172415, 10344830, 20689660]

約数ペア:

[(1, 20689660), (2, 10344830), (4, 5172415), (5, 4137932), (10, 2068966), (20, 1034483), (37, 559180), (73, 283420), (74, 279590), (146, 141710), (148, 139795), (185, 111836), (292, 70855), (365, 56684), (370, 55918), (383, 54020), (730, 28342), (740, 27959), (766, 27010), (1460, 14171), (1532, 13505), (1915, 10804), (2701, 7660), (3830, 5402)]