220971525

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{2441}}^1$

素因数の和:2542

約数の個数: 48

約数和(自身を含む): 392439168

約数和(自身を除く): 171467643

約数列:

[1, 3, 5, 15, 17, 25, 51, 71, 75, 85, 213, 255, 355, 425, 1065, 1207, 1275, 1775, 2441, 3621, 5325, 6035, 7323, 12205, 18105, 30175, 36615, 41497, 61025, 90525, 124491, 173311, 183075, 207485, 519933, 622455, 866555, 1037425, 2599665, 2946287, 3112275, 4332775, 8838861, 12998325, 14731435, 44194305, 73657175, 220971525]

約数ペア:

[(1, 220971525), (3, 73657175), (5, 44194305), (15, 14731435), (17, 12998325), (25, 8838861), (51, 4332775), (71, 3112275), (75, 2946287), (85, 2599665), (213, 1037425), (255, 866555), (355, 622455), (425, 519933), (1065, 207485), (1207, 183075), (1275, 173311), (1775, 124491), (2441, 90525), (3621, 61025), (5325, 41497), (6035, 36615), (7323, 30175), (12205, 18105)]