18897620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{347}}^1\times {\mathrm{389}}^1$

素因数の和:752

約数の個数: 48

約数和(自身を含む): 45601920

約数和(自身を除く): 26704300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 347, 389, 694, 778, 1388, 1556, 1735, 1945, 2429, 2723, 3470, 3890, 4858, 5446, 6940, 7780, 9716, 10892, 12145, 13615, 24290, 27230, 48580, 54460, 134983, 269966, 539932, 674915, 944881, 1349830, 1889762, 2699660, 3779524, 4724405, 9448810, 18897620]

約数ペア:

[(1, 18897620), (2, 9448810), (4, 4724405), (5, 3779524), (7, 2699660), (10, 1889762), (14, 1349830), (20, 944881), (28, 674915), (35, 539932), (70, 269966), (140, 134983), (347, 54460), (389, 48580), (694, 27230), (778, 24290), (1388, 13615), (1556, 12145), (1735, 10892), (1945, 9716), (2429, 7780), (2723, 6940), (3470, 5446), (3890, 4858)]