18189640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{167}}^1\times {\mathrm{389}}^1$

素因数の和:574

約数の個数: 64

約数和(自身を含む): 47174400

約数和(自身を除く): 28984760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 167, 280, 334, 389, 668, 778, 835, 1169, 1336, 1556, 1670, 1945, 2338, 2723, 3112, 3340, 3890, 4676, 5446, 5845, 6680, 7780, 9352, 10892, 11690, 13615, 15560, 21784, 23380, 27230, 46760, 54460, 64963, 108920, 129926, 259852, 324815, 454741, 519704, 649630, 909482, 1299260, 1818964, 2273705, 2598520, 3637928, 4547410, 9094820, 18189640]

約数ペア:

[(1, 18189640), (2, 9094820), (4, 4547410), (5, 3637928), (7, 2598520), (8, 2273705), (10, 1818964), (14, 1299260), (20, 909482), (28, 649630), (35, 519704), (40, 454741), (56, 324815), (70, 259852), (140, 129926), (167, 108920), (280, 64963), (334, 54460), (389, 46760), (668, 27230), (778, 23380), (835, 21784), (1169, 15560), (1336, 13615), (1556, 11690), (1670, 10892), (1945, 9352), (2338, 7780), (2723, 6680), (3112, 5845), (3340, 5446), (3890, 4676)]