251879030

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{62501}}^1$

素因数の和:62552

約数の個数: 32

約数和(自身を含む): 504016128

約数和(自身を除く): 252137098

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 62501, 125002, 312505, 625010, 812513, 1625026, 1937531, 3875062, 4062565, 8125130, 9687655, 19375310, 25187903, 50375806, 125939515, 251879030]

約数ペア:

[(1, 251879030), (2, 125939515), (5, 50375806), (10, 25187903), (13, 19375310), (26, 9687655), (31, 8125130), (62, 4062565), (65, 3875062), (130, 1937531), (155, 1625026), (310, 812513), (403, 625010), (806, 312505), (2015, 125002), (4030, 62501)]