18007640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{881}}^1$

素因数の和:972

約数の個数: 64

約数和(自身を含む): 46992960

約数和(自身を除く): 28985320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 881, 1022, 1460, 1762, 2044, 2555, 2920, 3524, 4088, 4405, 5110, 6167, 7048, 8810, 10220, 12334, 17620, 20440, 24668, 30835, 35240, 49336, 61670, 64313, 123340, 128626, 246680, 257252, 321565, 450191, 514504, 643130, 900382, 1286260, 1800764, 2250955, 2572520, 3601528, 4501910, 9003820, 18007640]

約数ペア:

[(1, 18007640), (2, 9003820), (4, 4501910), (5, 3601528), (7, 2572520), (8, 2250955), (10, 1800764), (14, 1286260), (20, 900382), (28, 643130), (35, 514504), (40, 450191), (56, 321565), (70, 257252), (73, 246680), (140, 128626), (146, 123340), (280, 64313), (292, 61670), (365, 49336), (511, 35240), (584, 30835), (730, 24668), (881, 20440), (1022, 17620), (1460, 12334), (1762, 10220), (2044, 8810), (2555, 7048), (2920, 6167), (3524, 5110), (4088, 4405)]