21128484

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:325

約数の個数: 96

約数和(自身を含む): 58254336

約数和(自身を除く): 37125852

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 26, 31, 34, 39, 51, 52, 62, 68, 78, 93, 102, 124, 156, 186, 204, 221, 257, 372, 403, 442, 514, 527, 663, 771, 806, 884, 1028, 1054, 1209, 1326, 1542, 1581, 1612, 2108, 2418, 2652, 3084, 3162, 3341, 4369, 4836, 6324, 6682, 6851, 7967, 8738, 10023, 13107, 13364, 13702, 15934, 17476, 20046, 20553, 23901, 26214, 27404, 31868, 40092, 41106, 47802, 52428, 56797, 82212, 95604, 103571, 113594, 135439, 170391, 207142, 227188, 270878, 310713, 340782, 406317, 414284, 541756, 621426, 681564, 812634, 1242852, 1625268, 1760707, 3521414, 5282121, 7042828, 10564242, 21128484]

約数ペア:

[(1, 21128484), (2, 10564242), (3, 7042828), (4, 5282121), (6, 3521414), (12, 1760707), (13, 1625268), (17, 1242852), (26, 812634), (31, 681564), (34, 621426), (39, 541756), (51, 414284), (52, 406317), (62, 340782), (68, 310713), (78, 270878), (93, 227188), (102, 207142), (124, 170391), (156, 135439), (186, 113594), (204, 103571), (221, 95604), (257, 82212), (372, 56797), (403, 52428), (442, 47802), (514, 41106), (527, 40092), (663, 31868), (771, 27404), (806, 26214), (884, 23901), (1028, 20553), (1054, 20046), (1209, 17476), (1326, 15934), (1542, 13702), (1581, 13364), (1612, 13107), (2108, 10023), (2418, 8738), (2652, 7967), (3084, 6851), (3162, 6682), (3341, 6324), (4369, 4836)]