21495200

素因数分解:

$2^5\times 5^2\times {\mathrm{97}}^1\times {\mathrm{277}}^1$

素因数の和:394

約数の個数: 72

約数和(自身を含む): 53207532

約数和(自身を除く): 31712332

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 97, 100, 160, 194, 200, 277, 388, 400, 485, 554, 776, 800, 970, 1108, 1385, 1552, 1940, 2216, 2425, 2770, 3104, 3880, 4432, 4850, 5540, 6925, 7760, 8864, 9700, 11080, 13850, 15520, 19400, 22160, 26869, 27700, 38800, 44320, 53738, 55400, 77600, 107476, 110800, 134345, 214952, 221600, 268690, 429904, 537380, 671725, 859808, 1074760, 1343450, 2149520, 2686900, 4299040, 5373800, 10747600, 21495200]

約数ペア:

[(1, 21495200), (2, 10747600), (4, 5373800), (5, 4299040), (8, 2686900), (10, 2149520), (16, 1343450), (20, 1074760), (25, 859808), (32, 671725), (40, 537380), (50, 429904), (80, 268690), (97, 221600), (100, 214952), (160, 134345), (194, 110800), (200, 107476), (277, 77600), (388, 55400), (400, 53738), (485, 44320), (554, 38800), (776, 27700), (800, 26869), (970, 22160), (1108, 19400), (1385, 15520), (1552, 13850), (1940, 11080), (2216, 9700), (2425, 8864), (2770, 7760), (3104, 6925), (3880, 5540), (4432, 4850)]