872155720

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{69661}}^1$

素因数の和:69985

約数の個数: 32

約数和(自身を含む): 1968648120

約数和(自身を除く): 1096492400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2504, 3130, 6260, 12520, 69661, 139322, 278644, 348305, 557288, 696610, 1393220, 2786440, 21803893, 43607786, 87215572, 109019465, 174431144, 218038930, 436077860, 872155720]

約数ペア:

[(1, 872155720), (2, 436077860), (4, 218038930), (5, 174431144), (8, 109019465), (10, 87215572), (20, 43607786), (40, 21803893), (313, 2786440), (626, 1393220), (1252, 696610), (1565, 557288), (2504, 348305), (3130, 278644), (6260, 139322), (12520, 69661)]