21810888680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{253733}}^1$

素因数の和:254058

約数の個数: 64

約数和(自身を含む): 56268051840

約数和(自身を除く): 34457163160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 307, 614, 1228, 1535, 2149, 2456, 3070, 4298, 6140, 8596, 10745, 12280, 17192, 21490, 42980, 85960, 253733, 507466, 1014932, 1268665, 1776131, 2029864, 2537330, 3552262, 5074660, 7104524, 8880655, 10149320, 14209048, 17761310, 35522620, 71045240, 77896031, 155792062, 311584124, 389480155, 545272217, 623168248, 778960310, 1090544434, 1557920620, 2181088868, 2726361085, 3115841240, 4362177736, 5452722170, 10905444340, 21810888680]

約数ペア:

[(1, 21810888680), (2, 10905444340), (4, 5452722170), (5, 4362177736), (7, 3115841240), (8, 2726361085), (10, 2181088868), (14, 1557920620), (20, 1090544434), (28, 778960310), (35, 623168248), (40, 545272217), (56, 389480155), (70, 311584124), (140, 155792062), (280, 77896031), (307, 71045240), (614, 35522620), (1228, 17761310), (1535, 14209048), (2149, 10149320), (2456, 8880655), (3070, 7104524), (4298, 5074660), (6140, 3552262), (8596, 2537330), (10745, 2029864), (12280, 1776131), (17192, 1268665), (21490, 1014932), (42980, 507466), (85960, 253733)]