20819880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{383}}^1$

素因数の和:551

約数の個数: 96

約数和(自身を含む): 68290560

約数和(自身を除く): 47470680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 151, 180, 302, 360, 383, 453, 604, 755, 766, 906, 1149, 1208, 1359, 1510, 1532, 1812, 1915, 2265, 2298, 2718, 3020, 3064, 3447, 3624, 3830, 4530, 4596, 5436, 5745, 6040, 6795, 6894, 7660, 9060, 9192, 10872, 11490, 13590, 13788, 15320, 17235, 18120, 22980, 27180, 27576, 34470, 45960, 54360, 57833, 68940, 115666, 137880, 173499, 231332, 289165, 346998, 462664, 520497, 578330, 693996, 867495, 1040994, 1156660, 1387992, 1734990, 2081988, 2313320, 2602485, 3469980, 4163976, 5204970, 6939960, 10409940, 20819880]

約数ペア:

[(1, 20819880), (2, 10409940), (3, 6939960), (4, 5204970), (5, 4163976), (6, 3469980), (8, 2602485), (9, 2313320), (10, 2081988), (12, 1734990), (15, 1387992), (18, 1156660), (20, 1040994), (24, 867495), (30, 693996), (36, 578330), (40, 520497), (45, 462664), (60, 346998), (72, 289165), (90, 231332), (120, 173499), (151, 137880), (180, 115666), (302, 68940), (360, 57833), (383, 54360), (453, 45960), (604, 34470), (755, 27576), (766, 27180), (906, 22980), (1149, 18120), (1208, 17235), (1359, 15320), (1510, 13788), (1532, 13590), (1812, 11490), (1915, 10872), (2265, 9192), (2298, 9060), (2718, 7660), (3020, 6894), (3064, 6795), (3447, 6040), (3624, 5745), (3830, 5436), (4530, 4596)]