521240

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 1194480

約数和(自身を除く): 673240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 157, 166, 314, 332, 415, 628, 664, 785, 830, 1256, 1570, 1660, 3140, 3320, 6280, 13031, 26062, 52124, 65155, 104248, 130310, 260620, 521240]

約数ペア:

[(1, 521240), (2, 260620), (4, 130310), (5, 104248), (8, 65155), (10, 52124), (20, 26062), (40, 13031), (83, 6280), (157, 3320), (166, 3140), (314, 1660), (332, 1570), (415, 1256), (628, 830), (664, 785)]