18811468

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{179}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 37255680

約数和(自身を除く): 18444212

約数列:

[1, 2, 4, 13, 26, 43, 47, 52, 86, 94, 172, 179, 188, 358, 559, 611, 716, 1118, 1222, 2021, 2236, 2327, 2444, 4042, 4654, 7697, 8084, 8413, 9308, 15394, 16826, 26273, 30788, 33652, 52546, 100061, 105092, 109369, 200122, 218738, 361759, 400244, 437476, 723518, 1447036, 4702867, 9405734, 18811468]

約数ペア:

[(1, 18811468), (2, 9405734), (4, 4702867), (13, 1447036), (26, 723518), (43, 437476), (47, 400244), (52, 361759), (86, 218738), (94, 200122), (172, 109369), (179, 105092), (188, 100061), (358, 52546), (559, 33652), (611, 30788), (716, 26273), (1118, 16826), (1222, 15394), (2021, 9308), (2236, 8413), (2327, 8084), (2444, 7697), (4042, 4654)]