28714540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{193}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 62381088

約数和(自身を除く): 33666548

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 173, 193, 215, 346, 386, 430, 692, 772, 860, 865, 965, 1730, 1930, 3460, 3860, 7439, 8299, 14878, 16598, 29756, 33196, 33389, 37195, 41495, 66778, 74390, 82990, 133556, 148780, 165980, 166945, 333890, 667780, 1435727, 2871454, 5742908, 7178635, 14357270, 28714540]

約数ペア:

[(1, 28714540), (2, 14357270), (4, 7178635), (5, 5742908), (10, 2871454), (20, 1435727), (43, 667780), (86, 333890), (172, 166945), (173, 165980), (193, 148780), (215, 133556), (346, 82990), (386, 74390), (430, 66778), (692, 41495), (772, 37195), (860, 33389), (865, 33196), (965, 29756), (1730, 16598), (1930, 14878), (3460, 8299), (3860, 7439)]