21585512

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{421}}^1$

素因数の和:486

約数の個数: 64

約数和(自身を含む): 47854800

約数和(自身を除く): 26269288

約数列:

[1, 2, 4, 8, 13, 17, 26, 29, 34, 52, 58, 68, 104, 116, 136, 221, 232, 377, 421, 442, 493, 754, 842, 884, 986, 1508, 1684, 1768, 1972, 3016, 3368, 3944, 5473, 6409, 7157, 10946, 12209, 12818, 14314, 21892, 24418, 25636, 28628, 43784, 48836, 51272, 57256, 93041, 97672, 158717, 186082, 207553, 317434, 372164, 415106, 634868, 744328, 830212, 1269736, 1660424, 2698189, 5396378, 10792756, 21585512]

約数ペア:

[(1, 21585512), (2, 10792756), (4, 5396378), (8, 2698189), (13, 1660424), (17, 1269736), (26, 830212), (29, 744328), (34, 634868), (52, 415106), (58, 372164), (68, 317434), (104, 207553), (116, 186082), (136, 158717), (221, 97672), (232, 93041), (377, 57256), (421, 51272), (442, 48836), (493, 43784), (754, 28628), (842, 25636), (884, 24418), (986, 21892), (1508, 14314), (1684, 12818), (1768, 12209), (1972, 10946), (3016, 7157), (3368, 6409), (3944, 5473)]