20181207788

素因数分解:

$2^2\times 7^1\times {\mathrm{431}}^1\times {\mathrm{569}}^1\times {\mathrm{2939}}^1$

素因数の和:3950

約数の個数: 48

約数和(自身を含む): 40540953600

約数和(自身を除く): 20359745812

約数列:

[1, 2, 4, 7, 14, 28, 431, 569, 862, 1138, 1724, 2276, 2939, 3017, 3983, 5878, 6034, 7966, 11756, 12068, 15932, 20573, 41146, 82292, 245239, 490478, 980956, 1266709, 1672291, 1716673, 2533418, 3344582, 3433346, 5066836, 6689164, 6866692, 8866963, 11706037, 17733926, 23412074, 35467852, 46824148, 720757421, 1441514842, 2883029684, 5045301947, 10090603894, 20181207788]

約数ペア:

[(1, 20181207788), (2, 10090603894), (4, 5045301947), (7, 2883029684), (14, 1441514842), (28, 720757421), (431, 46824148), (569, 35467852), (862, 23412074), (1138, 17733926), (1724, 11706037), (2276, 8866963), (2939, 6866692), (3017, 6689164), (3983, 5066836), (5878, 3433346), (6034, 3344582), (7966, 2533418), (11756, 1716673), (12068, 1672291), (15932, 1266709), (20573, 980956), (41146, 490478), (82292, 245239)]