138438520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{28603}}^1$

素因数の和:28636

約数の個数: 48

約数和(自身を含む): 342389880

約数和(自身を除く): 203951360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4840, 28603, 57206, 114412, 143015, 228824, 286030, 314633, 572060, 629266, 1144120, 1258532, 1573165, 2517064, 3146330, 3460963, 6292660, 6921926, 12585320, 13843852, 17304815, 27687704, 34609630, 69219260, 138438520]

約数ペア:

[(1, 138438520), (2, 69219260), (4, 34609630), (5, 27687704), (8, 17304815), (10, 13843852), (11, 12585320), (20, 6921926), (22, 6292660), (40, 3460963), (44, 3146330), (55, 2517064), (88, 1573165), (110, 1258532), (121, 1144120), (220, 629266), (242, 572060), (440, 314633), (484, 286030), (605, 228824), (968, 143015), (1210, 114412), (2420, 57206), (4840, 28603)]