18716996

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{971}}^1$

素因数の和:1115

約数の個数: 24

約数和(自身を含む): 33747840

約数和(自身を除く): 15030844

約数列:

[1, 2, 4, 61, 79, 122, 158, 244, 316, 971, 1942, 3884, 4819, 9638, 19276, 59231, 76709, 118462, 153418, 236924, 306836, 4679249, 9358498, 18716996]

約数ペア:

[(1, 18716996), (2, 9358498), (4, 4679249), (61, 306836), (79, 236924), (122, 153418), (158, 118462), (244, 76709), (316, 59231), (971, 19276), (1942, 9638), (3884, 4819)]