18218620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{727}}^1$

素因数の和:922

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 25810820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 179, 358, 716, 727, 895, 1253, 1454, 1790, 2506, 2908, 3580, 3635, 5012, 5089, 6265, 7270, 10178, 12530, 14540, 20356, 25060, 25445, 50890, 101780, 130133, 260266, 520532, 650665, 910931, 1301330, 1821862, 2602660, 3643724, 4554655, 9109310, 18218620]

約数ペア:

[(1, 18218620), (2, 9109310), (4, 4554655), (5, 3643724), (7, 2602660), (10, 1821862), (14, 1301330), (20, 910931), (28, 650665), (35, 520532), (70, 260266), (140, 130133), (179, 101780), (358, 50890), (716, 25445), (727, 25060), (895, 20356), (1253, 14540), (1454, 12530), (1790, 10178), (2506, 7270), (2908, 6265), (3580, 5089), (3635, 5012)]