19996920

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{55547}}^1$

素因数の和:55564

約数の個数: 48

約数和(自身を含む): 64991160

約数和(自身を除く): 44994240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 55547, 111094, 166641, 222188, 277735, 333282, 444376, 499923, 555470, 666564, 833205, 999846, 1110940, 1333128, 1666410, 1999692, 2221880, 2499615, 3332820, 3999384, 4999230, 6665640, 9998460, 19996920]

約数ペア:

[(1, 19996920), (2, 9998460), (3, 6665640), (4, 4999230), (5, 3999384), (6, 3332820), (8, 2499615), (9, 2221880), (10, 1999692), (12, 1666410), (15, 1333128), (18, 1110940), (20, 999846), (24, 833205), (30, 666564), (36, 555470), (40, 499923), (45, 444376), (60, 333282), (72, 277735), (90, 222188), (120, 166641), (180, 111094), (360, 55547)]