20455360

素因数分解:

$2^6\times 5^1\times {\mathrm{97}}^1\times {\mathrm{659}}^1$

素因数の和:773

約数の個数: 56

約数和(自身を含む): 49286160

約数和(自身を除く): 28830800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 160, 194, 320, 388, 485, 659, 776, 970, 1318, 1552, 1940, 2636, 3104, 3295, 3880, 5272, 6208, 6590, 7760, 10544, 13180, 15520, 21088, 26360, 31040, 42176, 52720, 63923, 105440, 127846, 210880, 255692, 319615, 511384, 639230, 1022768, 1278460, 2045536, 2556920, 4091072, 5113840, 10227680, 20455360]

約数ペア:

[(1, 20455360), (2, 10227680), (4, 5113840), (5, 4091072), (8, 2556920), (10, 2045536), (16, 1278460), (20, 1022768), (32, 639230), (40, 511384), (64, 319615), (80, 255692), (97, 210880), (160, 127846), (194, 105440), (320, 63923), (388, 52720), (485, 42176), (659, 31040), (776, 26360), (970, 21088), (1318, 15520), (1552, 13180), (1940, 10544), (2636, 7760), (3104, 6590), (3295, 6208), (3880, 5272)]