20672480

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2749}}^1$

素因数の和:2811

約数の個数: 48

約数和(自身を含む): 49896000

約数和(自身を除く): 29223520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 80, 94, 160, 188, 235, 376, 470, 752, 940, 1504, 1880, 2749, 3760, 5498, 7520, 10996, 13745, 21992, 27490, 43984, 54980, 87968, 109960, 129203, 219920, 258406, 439840, 516812, 646015, 1033624, 1292030, 2067248, 2584060, 4134496, 5168120, 10336240, 20672480]

約数ペア:

[(1, 20672480), (2, 10336240), (4, 5168120), (5, 4134496), (8, 2584060), (10, 2067248), (16, 1292030), (20, 1033624), (32, 646015), (40, 516812), (47, 439840), (80, 258406), (94, 219920), (160, 129203), (188, 109960), (235, 87968), (376, 54980), (470, 43984), (752, 27490), (940, 21992), (1504, 13745), (1880, 10996), (2749, 7520), (3760, 5498)]