20397840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{84991}}^1$

素因数の和:85007

約数の個数: 40

約数和(自身を含む): 63234048

約数和(自身を除く): 42836208

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 84991, 169982, 254973, 339964, 424955, 509946, 679928, 849910, 1019892, 1274865, 1359856, 1699820, 2039784, 2549730, 3399640, 4079568, 5099460, 6799280, 10198920, 20397840]

約数ペア:

[(1, 20397840), (2, 10198920), (3, 6799280), (4, 5099460), (5, 4079568), (6, 3399640), (8, 2549730), (10, 2039784), (12, 1699820), (15, 1359856), (16, 1274865), (20, 1019892), (24, 849910), (30, 679928), (40, 509946), (48, 424955), (60, 339964), (80, 254973), (120, 169982), (240, 84991)]