640038

素因数分解:

$2^1\times 3^1\times 7^3\times {\mathrm{311}}^1$

素因数の和:337

約数の個数: 32

約数和(自身を含む): 1497600

約数和(自身を除く): 857562

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294, 311, 343, 622, 686, 933, 1029, 1866, 2058, 2177, 4354, 6531, 13062, 15239, 30478, 45717, 91434, 106673, 213346, 320019, 640038]

約数ペア:

[(1, 640038), (2, 320019), (3, 213346), (6, 106673), (7, 91434), (14, 45717), (21, 30478), (42, 15239), (49, 13062), (98, 6531), (147, 4354), (294, 2177), (311, 2058), (343, 1866), (622, 1029), (686, 933)]