20390150

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{283}}^1$

素因数の和:437

約数の個数: 48

約数和(自身を含む): 41836608

約数和(自身を除く): 21446458

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 131, 262, 275, 283, 550, 566, 655, 1310, 1415, 1441, 2830, 2882, 3113, 3275, 6226, 6550, 7075, 7205, 14150, 14410, 15565, 31130, 36025, 37073, 72050, 74146, 77825, 155650, 185365, 370730, 407803, 815606, 926825, 1853650, 2039015, 4078030, 10195075, 20390150]

約数ペア:

[(1, 20390150), (2, 10195075), (5, 4078030), (10, 2039015), (11, 1853650), (22, 926825), (25, 815606), (50, 407803), (55, 370730), (110, 185365), (131, 155650), (262, 77825), (275, 74146), (283, 72050), (550, 37073), (566, 36025), (655, 31130), (1310, 15565), (1415, 14410), (1441, 14150), (2830, 7205), (2882, 7075), (3113, 6550), (3275, 6226)]