338702920

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{20113}}^1$

素因数の和:20545

約数の個数: 32

約数和(自身を含む): 763929720

約数和(自身を除く): 425226800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 8420, 16840, 20113, 40226, 80452, 100565, 160904, 201130, 402260, 804520, 8467573, 16935146, 33870292, 42337865, 67740584, 84675730, 169351460, 338702920]

約数ペア:

[(1, 338702920), (2, 169351460), (4, 84675730), (5, 67740584), (8, 42337865), (10, 33870292), (20, 16935146), (40, 8467573), (421, 804520), (842, 402260), (1684, 201130), (2105, 160904), (3368, 100565), (4210, 80452), (8420, 40226), (16840, 20113)]