21303992

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{383}}^1\times {\mathrm{409}}^1$

素因数の和:815

約数の個数: 32

約数和(自身を含む): 42508800

約数和(自身を除く): 21204808

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 383, 409, 766, 818, 1532, 1636, 3064, 3272, 6511, 6953, 13022, 13906, 26044, 27812, 52088, 55624, 156647, 313294, 626588, 1253176, 2662999, 5325998, 10651996, 21303992]

約数ペア:

[(1, 21303992), (2, 10651996), (4, 5325998), (8, 2662999), (17, 1253176), (34, 626588), (68, 313294), (136, 156647), (383, 55624), (409, 52088), (766, 27812), (818, 26044), (1532, 13906), (1636, 13022), (3064, 6953), (3272, 6511)]