18131380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{727}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 40360320

約数和(自身を除く): 22228940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 727, 860, 1247, 1454, 2494, 2908, 3635, 4988, 6235, 7270, 12470, 14540, 21083, 24940, 31261, 42166, 62522, 84332, 105415, 125044, 156305, 210830, 312610, 421660, 625220, 906569, 1813138, 3626276, 4532845, 9065690, 18131380]

約数ペア:

[(1, 18131380), (2, 9065690), (4, 4532845), (5, 3626276), (10, 1813138), (20, 906569), (29, 625220), (43, 421660), (58, 312610), (86, 210830), (116, 156305), (145, 125044), (172, 105415), (215, 84332), (290, 62522), (430, 42166), (580, 31261), (727, 24940), (860, 21083), (1247, 14540), (1454, 12470), (2494, 7270), (2908, 6235), (3635, 4988)]