18405832

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{419}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 38682000

約数和(自身を除く): 20276168

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 289, 323, 419, 578, 646, 838, 1156, 1292, 1676, 2312, 2584, 3352, 5491, 7123, 7961, 10982, 14246, 15922, 21964, 28492, 31844, 43928, 56984, 63688, 121091, 135337, 242182, 270674, 484364, 541348, 968728, 1082696, 2300729, 4601458, 9202916, 18405832]

約数ペア:

[(1, 18405832), (2, 9202916), (4, 4601458), (8, 2300729), (17, 1082696), (19, 968728), (34, 541348), (38, 484364), (68, 270674), (76, 242182), (136, 135337), (152, 121091), (289, 63688), (323, 56984), (419, 43928), (578, 31844), (646, 28492), (838, 21964), (1156, 15922), (1292, 14246), (1676, 10982), (2312, 7961), (2584, 7123), (3352, 5491)]