20319640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{46181}}^1$

素因数の和:46203

約数の個数: 32

約数和(自身を含む): 49876560

約数和(自身を除く): 29556920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 46181, 92362, 184724, 230905, 369448, 461810, 507991, 923620, 1015982, 1847240, 2031964, 2539955, 4063928, 5079910, 10159820, 20319640]

約数ペア:

[(1, 20319640), (2, 10159820), (4, 5079910), (5, 4063928), (8, 2539955), (10, 2031964), (11, 1847240), (20, 1015982), (22, 923620), (40, 507991), (44, 461810), (55, 369448), (88, 230905), (110, 184724), (220, 92362), (440, 46181)]