639341794

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{49477}}^1$

素因数の和:49570

約数の個数: 32

約数和(自身を含む): 1196971776

約数和(自身を除く): 557629982

約数列:

[1, 2, 7, 13, 14, 26, 71, 91, 142, 182, 497, 923, 994, 1846, 6461, 12922, 49477, 98954, 346339, 643201, 692678, 1286402, 3512867, 4502407, 7025734, 9004814, 24590069, 45667271, 49180138, 91334542, 319670897, 639341794]

約数ペア:

[(1, 639341794), (2, 319670897), (7, 91334542), (13, 49180138), (14, 45667271), (26, 24590069), (71, 9004814), (91, 7025734), (142, 4502407), (182, 3512867), (497, 1286402), (923, 692678), (994, 643201), (1846, 346339), (6461, 98954), (12922, 49477)]