19788972

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{2647}}^1$

素因数の和:2750

約数の個数: 48

約数和(自身を含む): 53383680

約数和(自身を除く): 33594708

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 89, 178, 267, 356, 534, 623, 1068, 1246, 1869, 2492, 2647, 3738, 5294, 7476, 7941, 10588, 15882, 18529, 31764, 37058, 55587, 74116, 111174, 222348, 235583, 471166, 706749, 942332, 1413498, 1649081, 2826996, 3298162, 4947243, 6596324, 9894486, 19788972]

約数ペア:

[(1, 19788972), (2, 9894486), (3, 6596324), (4, 4947243), (6, 3298162), (7, 2826996), (12, 1649081), (14, 1413498), (21, 942332), (28, 706749), (42, 471166), (84, 235583), (89, 222348), (178, 111174), (267, 74116), (356, 55587), (534, 37058), (623, 31764), (1068, 18529), (1246, 15882), (1869, 10588), (2492, 7941), (2647, 7476), (3738, 5294)]