20181832970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{385223}}^1$

素因数の和:385287

約数の個数: 48

約数和(自身を含む): 40605691392

約数和(自身を除く): 20423858422

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 169, 310, 338, 403, 806, 845, 1690, 2015, 4030, 5239, 10478, 26195, 52390, 385223, 770446, 1926115, 3852230, 5007899, 10015798, 11941913, 23883826, 25039495, 50078990, 59709565, 65102687, 119419130, 130205374, 155244869, 310489738, 325513435, 651026870, 776224345, 1552448690, 2018183297, 4036366594, 10090916485, 20181832970]

約数ペア:

[(1, 20181832970), (2, 10090916485), (5, 4036366594), (10, 2018183297), (13, 1552448690), (26, 776224345), (31, 651026870), (62, 325513435), (65, 310489738), (130, 155244869), (155, 130205374), (169, 119419130), (310, 65102687), (338, 59709565), (403, 50078990), (806, 25039495), (845, 23883826), (1690, 11941913), (2015, 10015798), (4030, 5007899), (5239, 3852230), (10478, 1926115), (26195, 770446), (52390, 385223)]