909967820

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{269}}^1\times {\mathrm{2141}}^1$

素因数の和:2498

約数の個数: 48

約数和(自身を含む): 1943222400

約数和(自身を除く): 1033254580

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 269, 316, 395, 538, 790, 1076, 1345, 1580, 2141, 2690, 4282, 5380, 8564, 10705, 21251, 21410, 42502, 42820, 85004, 106255, 169139, 212510, 338278, 425020, 575929, 676556, 845695, 1151858, 1691390, 2303716, 2879645, 3382780, 5759290, 11518580, 45498391, 90996782, 181993564, 227491955, 454983910, 909967820]

約数ペア:

[(1, 909967820), (2, 454983910), (4, 227491955), (5, 181993564), (10, 90996782), (20, 45498391), (79, 11518580), (158, 5759290), (269, 3382780), (316, 2879645), (395, 2303716), (538, 1691390), (790, 1151858), (1076, 845695), (1345, 676556), (1580, 575929), (2141, 425020), (2690, 338278), (4282, 212510), (5380, 169139), (8564, 106255), (10705, 85004), (21251, 42820), (21410, 42502)]