822680

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 1877040

約数和(自身を除く): 1054360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 157, 262, 314, 524, 628, 655, 785, 1048, 1256, 1310, 1570, 2620, 3140, 5240, 6280, 20567, 41134, 82268, 102835, 164536, 205670, 411340, 822680]

約数ペア:

[(1, 822680), (2, 411340), (4, 205670), (5, 164536), (8, 102835), (10, 82268), (20, 41134), (40, 20567), (131, 6280), (157, 5240), (262, 3140), (314, 2620), (524, 1570), (628, 1310), (655, 1256), (785, 1048)]