20393828

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{313}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 44311680

約数和(自身を除く): 23917852

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 179, 182, 313, 358, 364, 626, 716, 1252, 1253, 2191, 2327, 2506, 4069, 4382, 4654, 5012, 8138, 8764, 9308, 16276, 16289, 28483, 32578, 56027, 56966, 65156, 112054, 113932, 224108, 392189, 728351, 784378, 1456702, 1568756, 2913404, 5098457, 10196914, 20393828]

約数ペア:

[(1, 20393828), (2, 10196914), (4, 5098457), (7, 2913404), (13, 1568756), (14, 1456702), (26, 784378), (28, 728351), (52, 392189), (91, 224108), (179, 113932), (182, 112054), (313, 65156), (358, 56966), (364, 56027), (626, 32578), (716, 28483), (1252, 16289), (1253, 16276), (2191, 9308), (2327, 8764), (2506, 8138), (4069, 5012), (4382, 4654)]