18220240

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{11987}}^1$

素因数の和:12019

約数の個数: 40

約数和(自身を含む): 44595360

約数和(自身を除く): 26375120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 11987, 23974, 47948, 59935, 95896, 119870, 191792, 227753, 239740, 455506, 479480, 911012, 958960, 1138765, 1822024, 2277530, 3644048, 4555060, 9110120, 18220240]

約数ペア:

[(1, 18220240), (2, 9110120), (4, 4555060), (5, 3644048), (8, 2277530), (10, 1822024), (16, 1138765), (19, 958960), (20, 911012), (38, 479480), (40, 455506), (76, 239740), (80, 227753), (95, 191792), (152, 119870), (190, 95896), (304, 59935), (380, 47948), (760, 23974), (1520, 11987)]