202018940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{1999}}^1$

素因数の和:2202

約数の個数: 48

約数和(自身を含む): 440832000

約数和(自身を除く): 238813060

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 163, 310, 326, 620, 652, 815, 1630, 1999, 3260, 3998, 5053, 7996, 9995, 10106, 19990, 20212, 25265, 39980, 50530, 61969, 101060, 123938, 247876, 309845, 325837, 619690, 651674, 1239380, 1303348, 1629185, 3258370, 6516740, 10100947, 20201894, 40403788, 50504735, 101009470, 202018940]

約数ペア:

[(1, 202018940), (2, 101009470), (4, 50504735), (5, 40403788), (10, 20201894), (20, 10100947), (31, 6516740), (62, 3258370), (124, 1629185), (155, 1303348), (163, 1239380), (310, 651674), (326, 619690), (620, 325837), (652, 309845), (815, 247876), (1630, 123938), (1999, 101060), (3260, 61969), (3998, 50530), (5053, 39980), (7996, 25265), (9995, 20212), (10106, 19990)]