90321560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1979}}^1$

素因数の和:2160

約数の個数: 64

約数和(自身を含む): 233798400

約数和(自身を除く): 143476840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 163, 280, 326, 652, 815, 1141, 1304, 1630, 1979, 2282, 3260, 3958, 4564, 5705, 6520, 7916, 9128, 9895, 11410, 13853, 15832, 19790, 22820, 27706, 39580, 45640, 55412, 69265, 79160, 110824, 138530, 277060, 322577, 554120, 645154, 1290308, 1612885, 2258039, 2580616, 3225770, 4516078, 6451540, 9032156, 11290195, 12903080, 18064312, 22580390, 45160780, 90321560]

約数ペア:

[(1, 90321560), (2, 45160780), (4, 22580390), (5, 18064312), (7, 12903080), (8, 11290195), (10, 9032156), (14, 6451540), (20, 4516078), (28, 3225770), (35, 2580616), (40, 2258039), (56, 1612885), (70, 1290308), (140, 645154), (163, 554120), (280, 322577), (326, 277060), (652, 138530), (815, 110824), (1141, 79160), (1304, 69265), (1630, 55412), (1979, 45640), (2282, 39580), (3260, 27706), (3958, 22820), (4564, 19790), (5705, 15832), (6520, 13853), (7916, 11410), (9128, 9895)]