20293480

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8317}}^1$

素因数の和:8389

約数の個数: 32

約数和(自身を含む): 46414440

約数和(自身を除く): 26120960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 8317, 16634, 33268, 41585, 66536, 83170, 166340, 332680, 507337, 1014674, 2029348, 2536685, 4058696, 5073370, 10146740, 20293480]

約数ペア:

[(1, 20293480), (2, 10146740), (4, 5073370), (5, 4058696), (8, 2536685), (10, 2029348), (20, 1014674), (40, 507337), (61, 332680), (122, 166340), (244, 83170), (305, 66536), (488, 41585), (610, 33268), (1220, 16634), (2440, 8317)]