21684656

素因数分解:

$2^4\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1627}}^1$

素因数の和:1666

約数の個数: 60

約数和(自身を含む): 51780168

約数和(自身を除く): 30095512

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 49, 56, 68, 98, 112, 119, 136, 196, 238, 272, 392, 476, 784, 833, 952, 1627, 1666, 1904, 3254, 3332, 6508, 6664, 11389, 13016, 13328, 22778, 26032, 27659, 45556, 55318, 79723, 91112, 110636, 159446, 182224, 193613, 221272, 318892, 387226, 442544, 637784, 774452, 1275568, 1355291, 1548904, 2710582, 3097808, 5421164, 10842328, 21684656]

約数ペア:

[(1, 21684656), (2, 10842328), (4, 5421164), (7, 3097808), (8, 2710582), (14, 1548904), (16, 1355291), (17, 1275568), (28, 774452), (34, 637784), (49, 442544), (56, 387226), (68, 318892), (98, 221272), (112, 193613), (119, 182224), (136, 159446), (196, 110636), (238, 91112), (272, 79723), (392, 55318), (476, 45556), (784, 27659), (833, 26032), (952, 22778), (1627, 13328), (1666, 13016), (1904, 11389), (3254, 6664), (3332, 6508)]