201291920

素因数分解:

$2^4\times 5^1\times {\mathrm{991}}^1\times {\mathrm{2539}}^1$

素因数の和:3543

約数の個数: 40

約数和(自身を含む): 468660480

約数和(自身を除く): 267368560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 991, 1982, 2539, 3964, 4955, 5078, 7928, 9910, 10156, 12695, 15856, 19820, 20312, 25390, 39640, 40624, 50780, 79280, 101560, 203120, 2516149, 5032298, 10064596, 12580745, 20129192, 25161490, 40258384, 50322980, 100645960, 201291920]

約数ペア:

[(1, 201291920), (2, 100645960), (4, 50322980), (5, 40258384), (8, 25161490), (10, 20129192), (16, 12580745), (20, 10064596), (40, 5032298), (80, 2516149), (991, 203120), (1982, 101560), (2539, 79280), (3964, 50780), (4955, 40624), (5078, 39640), (7928, 25390), (9910, 20312), (10156, 19820), (12695, 15856)]