161009780

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{1091}}^1$

素因数の和:1304

約数の個数: 48

約数和(自身を含む): 347832576

約数和(自身を除く): 186822796

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 157, 188, 235, 314, 470, 628, 785, 940, 1091, 1570, 2182, 3140, 4364, 5455, 7379, 10910, 14758, 21820, 29516, 36895, 51277, 73790, 102554, 147580, 171287, 205108, 256385, 342574, 512770, 685148, 856435, 1025540, 1712870, 3425740, 8050489, 16100978, 32201956, 40252445, 80504890, 161009780]

約数ペア:

[(1, 161009780), (2, 80504890), (4, 40252445), (5, 32201956), (10, 16100978), (20, 8050489), (47, 3425740), (94, 1712870), (157, 1025540), (188, 856435), (235, 685148), (314, 512770), (470, 342574), (628, 256385), (785, 205108), (940, 171287), (1091, 147580), (1570, 102554), (2182, 73790), (3140, 51277), (4364, 36895), (5455, 29516), (7379, 21820), (10910, 14758)]