397745905

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{541}}^1$

素因数の和:745

約数の個数: 32

約数和(自身を含む): 515116800

約数和(自身を除く): 117370895

約数列:

[1, 5, 19, 71, 95, 109, 355, 541, 545, 1349, 2071, 2705, 6745, 7739, 10279, 10355, 38411, 38695, 51395, 58969, 147041, 192055, 294845, 729809, 735205, 1120411, 3649045, 4186799, 5602055, 20933995, 79549181, 397745905]

約数ペア:

[(1, 397745905), (5, 79549181), (19, 20933995), (71, 5602055), (95, 4186799), (109, 3649045), (355, 1120411), (541, 735205), (545, 729809), (1349, 294845), (2071, 192055), (2705, 147041), (6745, 58969), (7739, 51395), (10279, 38695), (10355, 38411)]