20351128

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{617}}^1$

素因数の和:680

約数の個数: 64

約数和(自身を含む): 47462400

約数和(自身を除く): 27111272

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 31, 38, 56, 62, 76, 124, 133, 152, 217, 248, 266, 434, 532, 589, 617, 868, 1064, 1178, 1234, 1736, 2356, 2468, 4123, 4319, 4712, 4936, 8246, 8638, 11723, 16492, 17276, 19127, 23446, 32984, 34552, 38254, 46892, 76508, 82061, 93784, 133889, 153016, 164122, 267778, 328244, 363413, 535556, 656488, 726826, 1071112, 1453652, 2543891, 2907304, 5087782, 10175564, 20351128]

約数ペア:

[(1, 20351128), (2, 10175564), (4, 5087782), (7, 2907304), (8, 2543891), (14, 1453652), (19, 1071112), (28, 726826), (31, 656488), (38, 535556), (56, 363413), (62, 328244), (76, 267778), (124, 164122), (133, 153016), (152, 133889), (217, 93784), (248, 82061), (266, 76508), (434, 46892), (532, 38254), (589, 34552), (617, 32984), (868, 23446), (1064, 19127), (1178, 17276), (1234, 16492), (1736, 11723), (2356, 8638), (2468, 8246), (4123, 4936), (4319, 4712)]