19992840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23801}}^1$

素因数の和:23822

約数の個数: 64

約数和(自身を含む): 68549760

約数和(自身を除く): 48556920

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, 23801, 47602, 71403, 95204, 119005, 142806, 166607, 190408, 238010, 285612, 333214, 357015, 476020, 499821, 571224, 666428, 714030, 833035, 952040, 999642, 1332856, 1428060, 1666070, 1999284, 2499105, 2856120, 3332140, 3998568, 4998210, 6664280, 9996420, 19992840]

約数ペア:

[(1, 19992840), (2, 9996420), (3, 6664280), (4, 4998210), (5, 3998568), (6, 3332140), (7, 2856120), (8, 2499105), (10, 1999284), (12, 1666070), (14, 1428060), (15, 1332856), (20, 999642), (21, 952040), (24, 833035), (28, 714030), (30, 666428), (35, 571224), (40, 499821), (42, 476020), (56, 357015), (60, 333214), (70, 285612), (84, 238010), (105, 190408), (120, 166607), (140, 142806), (168, 119005), (210, 95204), (280, 71403), (420, 47602), (840, 23801)]