215497640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{1301}}^1$

素因数の和:1454

約数の個数: 64

約数和(自身を含む): 501999120

約数和(自身を除く): 286501480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 101, 164, 202, 205, 328, 404, 410, 505, 808, 820, 1010, 1301, 1640, 2020, 2602, 4040, 4141, 5204, 6505, 8282, 10408, 13010, 16564, 20705, 26020, 33128, 41410, 52040, 53341, 82820, 106682, 131401, 165640, 213364, 262802, 266705, 426728, 525604, 533410, 657005, 1051208, 1066820, 1314010, 2133640, 2628020, 5256040, 5387441, 10774882, 21549764, 26937205, 43099528, 53874410, 107748820, 215497640]

約数ペア:

[(1, 215497640), (2, 107748820), (4, 53874410), (5, 43099528), (8, 26937205), (10, 21549764), (20, 10774882), (40, 5387441), (41, 5256040), (82, 2628020), (101, 2133640), (164, 1314010), (202, 1066820), (205, 1051208), (328, 657005), (404, 533410), (410, 525604), (505, 426728), (808, 266705), (820, 262802), (1010, 213364), (1301, 165640), (1640, 131401), (2020, 106682), (2602, 82820), (4040, 53341), (4141, 52040), (5204, 41410), (6505, 33128), (8282, 26020), (10408, 20705), (13010, 16564)]