21782920

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2399}}^1$

素因数の和:2637

約数の個数: 32

約数和(自身を含む): 49248000

約数和(自身を除く): 27465080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2270, 2399, 4540, 4798, 9080, 9596, 11995, 19192, 23990, 47980, 95960, 544573, 1089146, 2178292, 2722865, 4356584, 5445730, 10891460, 21782920]

約数ペア:

[(1, 21782920), (2, 10891460), (4, 5445730), (5, 4356584), (8, 2722865), (10, 2178292), (20, 1089146), (40, 544573), (227, 95960), (454, 47980), (908, 23990), (1135, 19192), (1816, 11995), (2270, 9596), (2399, 9080), (4540, 4798)]