25988240

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:324

約数の個数: 80

約数和(自身を含む): 64964592

約数和(自身を除く): 38976352

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 97, 136, 170, 194, 197, 272, 340, 388, 394, 485, 680, 776, 788, 970, 985, 1360, 1552, 1576, 1649, 1940, 1970, 3152, 3298, 3349, 3880, 3940, 6596, 6698, 7760, 7880, 8245, 13192, 13396, 15760, 16490, 16745, 19109, 26384, 26792, 32980, 33490, 38218, 53584, 65960, 66980, 76436, 95545, 131920, 133960, 152872, 191090, 267920, 305744, 324853, 382180, 649706, 764360, 1299412, 1528720, 1624265, 2598824, 3248530, 5197648, 6497060, 12994120, 25988240]

約数ペア:

[(1, 25988240), (2, 12994120), (4, 6497060), (5, 5197648), (8, 3248530), (10, 2598824), (16, 1624265), (17, 1528720), (20, 1299412), (34, 764360), (40, 649706), (68, 382180), (80, 324853), (85, 305744), (97, 267920), (136, 191090), (170, 152872), (194, 133960), (197, 131920), (272, 95545), (340, 76436), (388, 66980), (394, 65960), (485, 53584), (680, 38218), (776, 33490), (788, 32980), (970, 26792), (985, 26384), (1360, 19109), (1552, 16745), (1576, 16490), (1649, 15760), (1940, 13396), (1970, 13192), (3152, 8245), (3298, 7880), (3349, 7760), (3880, 6698), (3940, 6596)]