81728612

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1\times {\mathrm{401}}^1$

素因数の和:692

約数の個数: 48

約数和(自身を含む): 170190720

約数和(自身を除く): 88462108

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 251, 401, 406, 502, 802, 812, 1004, 1604, 1757, 2807, 3514, 5614, 7028, 7279, 11228, 11629, 14558, 23258, 29116, 46516, 50953, 81403, 100651, 101906, 162806, 201302, 203812, 325612, 402604, 704557, 1409114, 2818228, 2918879, 5837758, 11675516, 20432153, 40864306, 81728612]

約数ペア:

[(1, 81728612), (2, 40864306), (4, 20432153), (7, 11675516), (14, 5837758), (28, 2918879), (29, 2818228), (58, 1409114), (116, 704557), (203, 402604), (251, 325612), (401, 203812), (406, 201302), (502, 162806), (802, 101906), (812, 100651), (1004, 81403), (1604, 50953), (1757, 46516), (2807, 29116), (3514, 23258), (5614, 14558), (7028, 11629), (7279, 11228)]