201918940

素因数分解:

$2^2\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{5081}}^1$

素因数の和:7077

約数の個数: 24

約数和(自身を含む): 424326672

約数和(自身を除く): 222407732

約数列:

[1, 2, 4, 5, 10, 20, 1987, 3974, 5081, 7948, 9935, 10162, 19870, 20324, 25405, 39740, 50810, 101620, 10095947, 20191894, 40383788, 50479735, 100959470, 201918940]

約数ペア:

[(1, 201918940), (2, 100959470), (4, 50479735), (5, 40383788), (10, 20191894), (20, 10095947), (1987, 101620), (3974, 50810), (5081, 39740), (7948, 25405), (9935, 20324), (10162, 19870)]