21505530

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1301}}^1$

素因数の和:1359

約数の個数: 64

約数和(自身を含む): 56246400

約数和(自身を除く): 34740870

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 29, 30, 38, 57, 58, 87, 95, 114, 145, 174, 190, 285, 290, 435, 551, 570, 870, 1102, 1301, 1653, 2602, 2755, 3306, 3903, 5510, 6505, 7806, 8265, 13010, 16530, 19515, 24719, 37729, 39030, 49438, 74157, 75458, 113187, 123595, 148314, 188645, 226374, 247190, 370785, 377290, 565935, 716851, 741570, 1131870, 1433702, 2150553, 3584255, 4301106, 7168510, 10752765, 21505530]

約数ペア:

[(1, 21505530), (2, 10752765), (3, 7168510), (5, 4301106), (6, 3584255), (10, 2150553), (15, 1433702), (19, 1131870), (29, 741570), (30, 716851), (38, 565935), (57, 377290), (58, 370785), (87, 247190), (95, 226374), (114, 188645), (145, 148314), (174, 123595), (190, 113187), (285, 75458), (290, 74157), (435, 49438), (551, 39030), (570, 37729), (870, 24719), (1102, 19515), (1301, 16530), (1653, 13010), (2602, 8265), (2755, 7806), (3306, 6505), (3903, 5510)]