21114225

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{449}}^1$

素因数の和:495

約数の個数: 72

約数和(自身を含む): 43524000

約数和(自身を除く): 22409775

約数列:

[1, 3, 5, 9, 11, 15, 19, 25, 33, 45, 55, 57, 75, 95, 99, 165, 171, 209, 225, 275, 285, 449, 475, 495, 627, 825, 855, 1045, 1347, 1425, 1881, 2245, 2475, 3135, 4041, 4275, 4939, 5225, 6735, 8531, 9405, 11225, 14817, 15675, 20205, 24695, 25593, 33675, 42655, 44451, 47025, 74085, 76779, 93841, 101025, 123475, 127965, 213275, 222255, 281523, 370425, 383895, 469205, 639825, 844569, 1111275, 1407615, 1919475, 2346025, 4222845, 7038075, 21114225]

約数ペア:

[(1, 21114225), (3, 7038075), (5, 4222845), (9, 2346025), (11, 1919475), (15, 1407615), (19, 1111275), (25, 844569), (33, 639825), (45, 469205), (55, 383895), (57, 370425), (75, 281523), (95, 222255), (99, 213275), (165, 127965), (171, 123475), (209, 101025), (225, 93841), (275, 76779), (285, 74085), (449, 47025), (475, 44451), (495, 42655), (627, 33675), (825, 25593), (855, 24695), (1045, 20205), (1347, 15675), (1425, 14817), (1881, 11225), (2245, 9405), (2475, 8531), (3135, 6735), (4041, 5225), (4275, 4939)]