21987472

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2857}}^1$

素因数の和:2915

約数の個数: 40

約数和(自身を含む): 47134136

約数和(自身を除く): 25146664

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 74, 104, 148, 208, 296, 481, 592, 962, 1924, 2857, 3848, 5714, 7696, 11428, 22856, 37141, 45712, 74282, 105709, 148564, 211418, 297128, 422836, 594256, 845672, 1374217, 1691344, 2748434, 5496868, 10993736, 21987472]

約数ペア:

[(1, 21987472), (2, 10993736), (4, 5496868), (8, 2748434), (13, 1691344), (16, 1374217), (26, 845672), (37, 594256), (52, 422836), (74, 297128), (104, 211418), (148, 148564), (208, 105709), (296, 74282), (481, 45712), (592, 37141), (962, 22856), (1924, 11428), (2857, 7696), (3848, 5714)]