20178387518

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{81839}}^1$

素因数の和:81992

約数の個数: 32

約数和(自身を含む): 32149370880

約数和(自身を除く): 11970983362

約数列:

[1, 2, 43, 47, 61, 86, 94, 122, 2021, 2623, 2867, 4042, 5246, 5734, 81839, 123281, 163678, 246562, 3519077, 3846433, 4992179, 7038154, 7692866, 9984358, 165396619, 214663697, 234632413, 330793238, 429327394, 469264826, 10089193759, 20178387518]

約数ペア:

[(1, 20178387518), (2, 10089193759), (43, 469264826), (47, 429327394), (61, 330793238), (86, 234632413), (94, 214663697), (122, 165396619), (2021, 9984358), (2623, 7692866), (2867, 7038154), (4042, 4992179), (5246, 3846433), (5734, 3519077), (81839, 246562), (123281, 163678)]