1989103685

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{1993}}^1$

素因数の和:2213

約数の個数: 32

約数和(自身を含む): 2535985152

約数和(自身を除く): 546881467

約数列:

[1, 5, 31, 47, 137, 155, 235, 685, 1457, 1993, 4247, 6439, 7285, 9965, 21235, 32195, 61783, 93671, 199609, 273041, 308915, 468355, 998045, 1365205, 2903801, 8464271, 12832927, 14519005, 42321355, 64164635, 397820737, 1989103685]

約数ペア:

[(1, 1989103685), (5, 397820737), (31, 64164635), (47, 42321355), (137, 14519005), (155, 12832927), (235, 8464271), (685, 2903801), (1457, 1365205), (1993, 998045), (4247, 468355), (6439, 308915), (7285, 273041), (9965, 199609), (21235, 93671), (32195, 61783)]