18899120

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2339}}^1$

素因数の和:2453

約数の個数: 40

約数和(自身を含む): 44394480

約数和(自身を除く): 25495360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2339, 4040, 4678, 8080, 9356, 11695, 18712, 23390, 37424, 46780, 93560, 187120, 236239, 472478, 944956, 1181195, 1889912, 2362390, 3779824, 4724780, 9449560, 18899120]

約数ペア:

[(1, 18899120), (2, 9449560), (4, 4724780), (5, 3779824), (8, 2362390), (10, 1889912), (16, 1181195), (20, 944956), (40, 472478), (80, 236239), (101, 187120), (202, 93560), (404, 46780), (505, 37424), (808, 23390), (1010, 18712), (1616, 11695), (2020, 9356), (2339, 8080), (4040, 4678)]