255440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:147

約数の個数: 40

約数和(自身を含む): 619008

約数和(自身を除く): 363568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 103, 124, 155, 206, 248, 310, 412, 496, 515, 620, 824, 1030, 1240, 1648, 2060, 2480, 3193, 4120, 6386, 8240, 12772, 15965, 25544, 31930, 51088, 63860, 127720, 255440]

約数ペア:

[(1, 255440), (2, 127720), (4, 63860), (5, 51088), (8, 31930), (10, 25544), (16, 15965), (20, 12772), (31, 8240), (40, 6386), (62, 4120), (80, 3193), (103, 2480), (124, 2060), (155, 1648), (206, 1240), (248, 1030), (310, 824), (412, 620), (496, 515)]