20748880

素因数分解:

$2^4\times 5^1\times {\mathrm{419}}^1\times {\mathrm{619}}^1$

素因数の和:1051

約数の個数: 40

約数和(自身を含む): 48434400

約数和(自身を除く): 27685520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 419, 619, 838, 1238, 1676, 2095, 2476, 3095, 3352, 4190, 4952, 6190, 6704, 8380, 9904, 12380, 16760, 24760, 33520, 49520, 259361, 518722, 1037444, 1296805, 2074888, 2593610, 4149776, 5187220, 10374440, 20748880]

約数ペア:

[(1, 20748880), (2, 10374440), (4, 5187220), (5, 4149776), (8, 2593610), (10, 2074888), (16, 1296805), (20, 1037444), (40, 518722), (80, 259361), (419, 49520), (619, 33520), (838, 24760), (1238, 16760), (1676, 12380), (2095, 9904), (2476, 8380), (3095, 6704), (3352, 6190), (4190, 4952)]