21545524

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5381}}^1$

素因数の和:5416

約数の個数: 48

約数和(自身を含む): 50633856

約数和(自身を除く): 29088332

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 5381, 10762, 21524, 37667, 59191, 69953, 75334, 118382, 139906, 150668, 236764, 279812, 414337, 489671, 769483, 828674, 979342, 1538966, 1657348, 1958684, 3077932, 5386381, 10772762, 21545524]

約数ペア:

[(1, 21545524), (2, 10772762), (4, 5386381), (7, 3077932), (11, 1958684), (13, 1657348), (14, 1538966), (22, 979342), (26, 828674), (28, 769483), (44, 489671), (52, 414337), (77, 279812), (91, 236764), (143, 150668), (154, 139906), (182, 118382), (286, 75334), (308, 69953), (364, 59191), (572, 37667), (1001, 21524), (2002, 10762), (4004, 5381)]