21431416

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{839}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 41932800

約数和(自身を除く): 20501384

約数列:

[1, 2, 4, 8, 31, 62, 103, 124, 206, 248, 412, 824, 839, 1678, 3193, 3356, 6386, 6712, 12772, 25544, 26009, 52018, 86417, 104036, 172834, 208072, 345668, 691336, 2678927, 5357854, 10715708, 21431416]

約数ペア:

[(1, 21431416), (2, 10715708), (4, 5357854), (8, 2678927), (31, 691336), (62, 345668), (103, 208072), (124, 172834), (206, 104036), (248, 86417), (412, 52018), (824, 26009), (839, 25544), (1678, 12772), (3193, 6712), (3356, 6386)]