20420868

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1657}}^1$

素因数の和:1756

約数の個数: 48

約数和(自身を含む): 51994880

約数和(自身を除く): 31574012

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 79, 156, 158, 237, 316, 474, 948, 1027, 1657, 2054, 3081, 3314, 4108, 4971, 6162, 6628, 9942, 12324, 19884, 21541, 43082, 64623, 86164, 129246, 130903, 258492, 261806, 392709, 523612, 785418, 1570836, 1701739, 3403478, 5105217, 6806956, 10210434, 20420868]

約数ペア:

[(1, 20420868), (2, 10210434), (3, 6806956), (4, 5105217), (6, 3403478), (12, 1701739), (13, 1570836), (26, 785418), (39, 523612), (52, 392709), (78, 261806), (79, 258492), (156, 130903), (158, 129246), (237, 86164), (316, 64623), (474, 43082), (948, 21541), (1027, 19884), (1657, 12324), (2054, 9942), (3081, 6628), (3314, 6162), (4108, 4971)]