81717720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{97283}}^1$

素因数の和:97304

約数の個数: 64

約数和(自身を含む): 280177920

約数和(自身を除く): 198460200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 97283, 194566, 291849, 389132, 486415, 583698, 680981, 778264, 972830, 1167396, 1361962, 1459245, 1945660, 2042943, 2334792, 2723924, 2918490, 3404905, 3891320, 4085886, 5447848, 5836980, 6809810, 8171772, 10214715, 11673960, 13619620, 16343544, 20429430, 27239240, 40858860, 81717720]

約数ペア:

[(1, 81717720), (2, 40858860), (3, 27239240), (4, 20429430), (5, 16343544), (6, 13619620), (7, 11673960), (8, 10214715), (10, 8171772), (12, 6809810), (14, 5836980), (15, 5447848), (20, 4085886), (21, 3891320), (24, 3404905), (28, 2918490), (30, 2723924), (35, 2334792), (40, 2042943), (42, 1945660), (56, 1459245), (60, 1361962), (70, 1167396), (84, 972830), (105, 778264), (120, 680981), (140, 583698), (168, 486415), (210, 389132), (280, 291849), (420, 194566), (840, 97283)]