206547080

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1\times {\mathrm{401}}^1$

素因数の和:654

約数の個数: 64

約数和(自身を含む): 474681600

約数和(自身を除く): 268134520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 163, 316, 326, 395, 401, 632, 652, 790, 802, 815, 1304, 1580, 1604, 1630, 2005, 3160, 3208, 3260, 4010, 6520, 8020, 12877, 16040, 25754, 31679, 51508, 63358, 64385, 65363, 103016, 126716, 128770, 130726, 158395, 253432, 257540, 261452, 316790, 326815, 515080, 522904, 633580, 653630, 1267160, 1307260, 2614520, 5163677, 10327354, 20654708, 25818385, 41309416, 51636770, 103273540, 206547080]

約数ペア:

[(1, 206547080), (2, 103273540), (4, 51636770), (5, 41309416), (8, 25818385), (10, 20654708), (20, 10327354), (40, 5163677), (79, 2614520), (158, 1307260), (163, 1267160), (316, 653630), (326, 633580), (395, 522904), (401, 515080), (632, 326815), (652, 316790), (790, 261452), (802, 257540), (815, 253432), (1304, 158395), (1580, 130726), (1604, 128770), (1630, 126716), (2005, 103016), (3160, 65363), (3208, 64385), (3260, 63358), (4010, 51508), (6520, 31679), (8020, 25754), (12877, 16040)]