20878728

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{66919}}^1$

素因数の和:66941

約数の個数: 32

約数和(自身を含む): 56212800

約数和(自身を除く): 35334072

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 66919, 133838, 200757, 267676, 401514, 535352, 803028, 869947, 1606056, 1739894, 2609841, 3479788, 5219682, 6959576, 10439364, 20878728]

約数ペア:

[(1, 20878728), (2, 10439364), (3, 6959576), (4, 5219682), (6, 3479788), (8, 2609841), (12, 1739894), (13, 1606056), (24, 869947), (26, 803028), (39, 535352), (52, 401514), (78, 267676), (104, 200757), (156, 133838), (312, 66919)]