2018789980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1\times {\mathrm{10301}}^1$

素因数の和:10590

約数の個数: 48

約数和(自身を含む): 4361454720

約数和(自身を除く): 2342664740

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 239, 410, 478, 820, 956, 1195, 2390, 4780, 9799, 10301, 19598, 20602, 39196, 41204, 48995, 51505, 97990, 103010, 195980, 206020, 422341, 844682, 1689364, 2111705, 2461939, 4223410, 4923878, 8446820, 9847756, 12309695, 24619390, 49238780, 100939499, 201878998, 403757996, 504697495, 1009394990, 2018789980]

約数ペア:

[(1, 2018789980), (2, 1009394990), (4, 504697495), (5, 403757996), (10, 201878998), (20, 100939499), (41, 49238780), (82, 24619390), (164, 12309695), (205, 9847756), (239, 8446820), (410, 4923878), (478, 4223410), (820, 2461939), (956, 2111705), (1195, 1689364), (2390, 844682), (4780, 422341), (9799, 206020), (10301, 195980), (19598, 103010), (20602, 97990), (39196, 51505), (41204, 48995)]