640374

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:284

約数の個数: 32

約数和(自身を含む): 1489920

約数和(自身を除く): 849546

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 79, 158, 193, 237, 386, 474, 553, 579, 1106, 1158, 1351, 1659, 2702, 3318, 4053, 8106, 15247, 30494, 45741, 91482, 106729, 213458, 320187, 640374]

約数ペア:

[(1, 640374), (2, 320187), (3, 213458), (6, 106729), (7, 91482), (14, 45741), (21, 30494), (42, 15247), (79, 8106), (158, 4053), (193, 3318), (237, 2702), (386, 1659), (474, 1351), (553, 1158), (579, 1106)]