18085840

素因数分解:

$2^4\times 5^1\times {\mathrm{331}}^1\times {\mathrm{683}}^1$

素因数の和:1027

約数の個数: 40

約数和(自身を含む): 42238368

約数和(自身を除く): 24152528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 331, 662, 683, 1324, 1366, 1655, 2648, 2732, 3310, 3415, 5296, 5464, 6620, 6830, 10928, 13240, 13660, 26480, 27320, 54640, 226073, 452146, 904292, 1130365, 1808584, 2260730, 3617168, 4521460, 9042920, 18085840]

約数ペア:

[(1, 18085840), (2, 9042920), (4, 4521460), (5, 3617168), (8, 2260730), (10, 1808584), (16, 1130365), (20, 904292), (40, 452146), (80, 226073), (331, 54640), (662, 27320), (683, 26480), (1324, 13660), (1366, 13240), (1655, 10928), (2648, 6830), (2732, 6620), (3310, 5464), (3415, 5296)]