21111525

素因数分解:

$3^2\times 5^2\times {\mathrm{101}}^1\times {\mathrm{929}}^1$

素因数の和:1046

約数の個数: 36

約数和(自身を含む): 38228580

約数和(自身を除く): 17117055

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 101, 225, 303, 505, 909, 929, 1515, 2525, 2787, 4545, 4645, 7575, 8361, 13935, 22725, 23225, 41805, 69675, 93829, 209025, 281487, 469145, 844461, 1407435, 2345725, 4222305, 7037175, 21111525]

約数ペア:

[(1, 21111525), (3, 7037175), (5, 4222305), (9, 2345725), (15, 1407435), (25, 844461), (45, 469145), (75, 281487), (101, 209025), (225, 93829), (303, 69675), (505, 41805), (909, 23225), (929, 22725), (1515, 13935), (2525, 8361), (2787, 7575), (4545, 4645)]