81620708

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{211}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 159061056

約数和(自身を除く): 77440348

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 173, 211, 346, 422, 559, 692, 844, 1118, 2236, 2249, 2743, 4498, 5486, 7439, 8996, 9073, 10972, 14878, 18146, 29756, 36292, 36503, 73006, 96707, 117949, 146012, 193414, 235898, 386828, 471796, 474539, 949078, 1569629, 1898156, 3139258, 6278516, 20405177, 40810354, 81620708]

約数ペア:

[(1, 81620708), (2, 40810354), (4, 20405177), (13, 6278516), (26, 3139258), (43, 1898156), (52, 1569629), (86, 949078), (172, 474539), (173, 471796), (211, 386828), (346, 235898), (422, 193414), (559, 146012), (692, 117949), (844, 96707), (1118, 73006), (2236, 36503), (2249, 36292), (2743, 29756), (4498, 18146), (5486, 14878), (7439, 10972), (8996, 9073)]