20685812

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{487}}^1$

素因数の和:576

約数の個数: 48

約数和(自身を含む): 43615488

約数和(自身を除く): 22929676

約数列:

[1, 2, 4, 7, 14, 28, 37, 41, 74, 82, 148, 164, 259, 287, 487, 518, 574, 974, 1036, 1148, 1517, 1948, 3034, 3409, 6068, 6818, 10619, 13636, 18019, 19967, 21238, 36038, 39934, 42476, 72076, 79868, 126133, 139769, 252266, 279538, 504532, 559076, 738779, 1477558, 2955116, 5171453, 10342906, 20685812]

約数ペア:

[(1, 20685812), (2, 10342906), (4, 5171453), (7, 2955116), (14, 1477558), (28, 738779), (37, 559076), (41, 504532), (74, 279538), (82, 252266), (148, 139769), (164, 126133), (259, 79868), (287, 72076), (487, 42476), (518, 39934), (574, 36038), (974, 21238), (1036, 19967), (1148, 18019), (1517, 13636), (1948, 10619), (3034, 6818), (3409, 6068)]