398797420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{10831}}^1$

素因数の和:11110

約数の個数: 48

約数和(自身を含む): 960841728

約数和(自身を除く): 562044308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 263, 526, 1052, 1315, 1841, 2630, 3682, 5260, 7364, 9205, 10831, 18410, 21662, 36820, 43324, 54155, 75817, 108310, 151634, 216620, 303268, 379085, 758170, 1516340, 2848553, 5697106, 11394212, 14242765, 19939871, 28485530, 39879742, 56971060, 79759484, 99699355, 199398710, 398797420]

約数ペア:

[(1, 398797420), (2, 199398710), (4, 99699355), (5, 79759484), (7, 56971060), (10, 39879742), (14, 28485530), (20, 19939871), (28, 14242765), (35, 11394212), (70, 5697106), (140, 2848553), (263, 1516340), (526, 758170), (1052, 379085), (1315, 303268), (1841, 216620), (2630, 151634), (3682, 108310), (5260, 75817), (7364, 54155), (9205, 43324), (10831, 36820), (18410, 21662)]