21556570

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:128

約数の個数: 96

約数和(自身を含む): 49124880

約数和(自身を除く): 27568310

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 37, 41, 49, 58, 70, 74, 82, 98, 145, 185, 203, 205, 245, 259, 287, 290, 370, 406, 410, 490, 518, 574, 1015, 1073, 1189, 1295, 1421, 1435, 1517, 1813, 2009, 2030, 2146, 2378, 2590, 2842, 2870, 3034, 3626, 4018, 5365, 5945, 7105, 7511, 7585, 8323, 9065, 10045, 10619, 10730, 11890, 14210, 15022, 15170, 16646, 18130, 20090, 21238, 37555, 41615, 43993, 52577, 53095, 58261, 74333, 75110, 83230, 87986, 105154, 106190, 116522, 148666, 219965, 262885, 291305, 307951, 371665, 439930, 525770, 582610, 615902, 743330, 1539755, 2155657, 3079510, 4311314, 10778285, 21556570]

約数ペア:

[(1, 21556570), (2, 10778285), (5, 4311314), (7, 3079510), (10, 2155657), (14, 1539755), (29, 743330), (35, 615902), (37, 582610), (41, 525770), (49, 439930), (58, 371665), (70, 307951), (74, 291305), (82, 262885), (98, 219965), (145, 148666), (185, 116522), (203, 106190), (205, 105154), (245, 87986), (259, 83230), (287, 75110), (290, 74333), (370, 58261), (406, 53095), (410, 52577), (490, 43993), (518, 41615), (574, 37555), (1015, 21238), (1073, 20090), (1189, 18130), (1295, 16646), (1421, 15170), (1435, 15022), (1517, 14210), (1813, 11890), (2009, 10730), (2030, 10619), (2146, 10045), (2378, 9065), (2590, 8323), (2842, 7585), (2870, 7511), (3034, 7105), (3626, 5945), (4018, 5365)]