1961797820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1\times {\mathrm{7621}}^1$

素因数の和:7902

約数の個数: 48

約数和(自身を含む): 4207709856

約数和(自身を除く): 2245912036

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 211, 244, 305, 422, 610, 844, 1055, 1220, 2110, 4220, 7621, 12871, 15242, 25742, 30484, 38105, 51484, 64355, 76210, 128710, 152420, 257420, 464881, 929762, 1608031, 1859524, 2324405, 3216062, 4648810, 6432124, 8040155, 9297620, 16080310, 32160620, 98089891, 196179782, 392359564, 490449455, 980898910, 1961797820]

約数ペア:

[(1, 1961797820), (2, 980898910), (4, 490449455), (5, 392359564), (10, 196179782), (20, 98089891), (61, 32160620), (122, 16080310), (211, 9297620), (244, 8040155), (305, 6432124), (422, 4648810), (610, 3216062), (844, 2324405), (1055, 1859524), (1220, 1608031), (2110, 929762), (4220, 464881), (7621, 257420), (12871, 152420), (15242, 128710), (25742, 76210), (30484, 64355), (38105, 51484)]