20121520

素因数分解:

$2^4\times 5^1\times {\mathrm{251519}}^1$

素因数の和:251532

約数の個数: 20

約数和(自身を含む): 46782720

約数和(自身を除く): 26661200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251519, 503038, 1006076, 1257595, 2012152, 2515190, 4024304, 5030380, 10060760, 20121520]

約数ペア:

[(1, 20121520), (2, 10060760), (4, 5030380), (5, 4024304), (8, 2515190), (10, 2012152), (16, 1257595), (20, 1006076), (40, 503038), (80, 251519)]