40902020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1783}}^1$

素因数の和:1860

約数の個数: 48

約数和(自身を含む): 91112448

約数和(自身を除く): 50210428

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 74, 124, 148, 155, 185, 310, 370, 620, 740, 1147, 1783, 2294, 3566, 4588, 5735, 7132, 8915, 11470, 17830, 22940, 35660, 55273, 65971, 110546, 131942, 221092, 263884, 276365, 329855, 552730, 659710, 1105460, 1319420, 2045101, 4090202, 8180404, 10225505, 20451010, 40902020]

約数ペア:

[(1, 40902020), (2, 20451010), (4, 10225505), (5, 8180404), (10, 4090202), (20, 2045101), (31, 1319420), (37, 1105460), (62, 659710), (74, 552730), (124, 329855), (148, 276365), (155, 263884), (185, 221092), (310, 131942), (370, 110546), (620, 65971), (740, 55273), (1147, 35660), (1783, 22940), (2294, 17830), (3566, 11470), (4588, 8915), (5735, 7132)]