138300920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{111533}}^1$

素因数の和:111575

約数の個数: 32

約数和(自身を含む): 321217920

約数和(自身を除く): 182917000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 111533, 223066, 446132, 557665, 892264, 1115330, 2230660, 3457523, 4461320, 6915046, 13830092, 17287615, 27660184, 34575230, 69150460, 138300920]

約数ペア:

[(1, 138300920), (2, 69150460), (4, 34575230), (5, 27660184), (8, 17287615), (10, 13830092), (20, 6915046), (31, 4461320), (40, 3457523), (62, 2230660), (124, 1115330), (155, 892264), (248, 557665), (310, 446132), (620, 223066), (1240, 111533)]