1338821840

素因数分解:

$2^4\times 5^1\times {\mathrm{16735273}}^1$

素因数の和:16735286

約数の個数: 20

約数和(自身を含む): 3112760964

約数和(自身を除く): 1773939124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 16735273, 33470546, 66941092, 83676365, 133882184, 167352730, 267764368, 334705460, 669410920, 1338821840]

約数ペア:

[(1, 1338821840), (2, 669410920), (4, 334705460), (5, 267764368), (8, 167352730), (10, 133882184), (16, 83676365), (20, 66941092), (40, 33470546), (80, 16735273)]