21629025

素因数分解:

$3^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{971}}^1$

素因数の和:1004

約数の個数: 60

約数和(自身を含む): 43751664

約数和(自身を除く): 22122639

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 81, 99, 135, 165, 225, 275, 297, 405, 495, 675, 825, 891, 971, 1485, 2025, 2475, 2913, 4455, 4855, 7425, 8739, 10681, 14565, 22275, 24275, 26217, 32043, 43695, 53405, 72825, 78651, 96129, 131085, 160215, 218475, 267025, 288387, 393255, 480645, 655425, 801075, 865161, 1441935, 1966275, 2403225, 4325805, 7209675, 21629025]

約数ペア:

[(1, 21629025), (3, 7209675), (5, 4325805), (9, 2403225), (11, 1966275), (15, 1441935), (25, 865161), (27, 801075), (33, 655425), (45, 480645), (55, 393255), (75, 288387), (81, 267025), (99, 218475), (135, 160215), (165, 131085), (225, 96129), (275, 78651), (297, 72825), (405, 53405), (495, 43695), (675, 32043), (825, 26217), (891, 24275), (971, 22275), (1485, 14565), (2025, 10681), (2475, 8739), (2913, 7425), (4455, 4855)]