18660860

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{9619}}^1$

素因数の和:9725

約数の個数: 24

約数和(自身を含む): 39595920

約数和(自身を除く): 20935060

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 9619, 19238, 38476, 48095, 96190, 192380, 933043, 1866086, 3732172, 4665215, 9330430, 18660860]

約数ペア:

[(1, 18660860), (2, 9330430), (4, 4665215), (5, 3732172), (10, 1866086), (20, 933043), (97, 192380), (194, 96190), (388, 48095), (485, 38476), (970, 19238), (1940, 9619)]