1279208060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{258949}}^1$

素因数の和:258990

約数の個数: 48

約数和(自身を含む): 3045252000

約数和(自身を除く): 1766043940

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 258949, 517898, 1035796, 1294745, 2589490, 3366337, 4920031, 5178980, 6732674, 9840062, 13465348, 16831685, 19680124, 24600155, 33663370, 49200310, 63960403, 67326740, 98400620, 127920806, 255841612, 319802015, 639604030, 1279208060]

約数ペア:

[(1, 1279208060), (2, 639604030), (4, 319802015), (5, 255841612), (10, 127920806), (13, 98400620), (19, 67326740), (20, 63960403), (26, 49200310), (38, 33663370), (52, 24600155), (65, 19680124), (76, 16831685), (95, 13465348), (130, 9840062), (190, 6732674), (247, 5178980), (260, 4920031), (380, 3366337), (494, 2589490), (988, 1294745), (1235, 1035796), (2470, 517898), (4940, 258949)]