20448540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16229}}^1$

素因数の和:16251

約数の個数: 72

約数和(自身を含む): 70892640

約数和(自身を除く): 50444100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16229, 32458, 48687, 64916, 81145, 97374, 113603, 146061, 162290, 194748, 227206, 243435, 292122, 324580, 340809, 454412, 486870, 568015, 584244, 681618, 730305, 973740, 1022427, 1136030, 1363236, 1460610, 1704045, 2044854, 2272060, 2921220, 3408090, 4089708, 5112135, 6816180, 10224270, 20448540]

約数ペア:

[(1, 20448540), (2, 10224270), (3, 6816180), (4, 5112135), (5, 4089708), (6, 3408090), (7, 2921220), (9, 2272060), (10, 2044854), (12, 1704045), (14, 1460610), (15, 1363236), (18, 1136030), (20, 1022427), (21, 973740), (28, 730305), (30, 681618), (35, 584244), (36, 568015), (42, 486870), (45, 454412), (60, 340809), (63, 324580), (70, 292122), (84, 243435), (90, 227206), (105, 194748), (126, 162290), (140, 146061), (180, 113603), (210, 97374), (252, 81145), (315, 64916), (420, 48687), (630, 32458), (1260, 16229)]