28754420

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{18199}}^1$

素因数の和:18287

約数の個数: 24

約数和(自身を含む): 61152000

約数和(自身を除く): 32397580

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 18199, 36398, 72796, 90995, 181990, 363980, 1437721, 2875442, 5750884, 7188605, 14377210, 28754420]

約数ペア:

[(1, 28754420), (2, 14377210), (4, 7188605), (5, 5750884), (10, 2875442), (20, 1437721), (79, 363980), (158, 181990), (316, 90995), (395, 72796), (790, 36398), (1580, 18199)]