21502395

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 41126400

約数和(自身を除く): 19624005

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 83, 95, 101, 135, 171, 249, 285, 303, 415, 505, 513, 747, 855, 909, 1245, 1515, 1577, 1919, 2241, 2565, 2727, 3735, 4545, 4731, 5757, 7885, 8383, 9595, 11205, 13635, 14193, 17271, 23655, 25149, 28785, 41915, 42579, 51813, 70965, 75447, 86355, 125745, 159277, 212895, 226341, 259065, 377235, 477831, 796385, 1131705, 1433493, 2389155, 4300479, 7167465, 21502395]

約数ペア:

[(1, 21502395), (3, 7167465), (5, 4300479), (9, 2389155), (15, 1433493), (19, 1131705), (27, 796385), (45, 477831), (57, 377235), (83, 259065), (95, 226341), (101, 212895), (135, 159277), (171, 125745), (249, 86355), (285, 75447), (303, 70965), (415, 51813), (505, 42579), (513, 41915), (747, 28785), (855, 25149), (909, 23655), (1245, 17271), (1515, 14193), (1577, 13635), (1919, 11205), (2241, 9595), (2565, 8383), (2727, 7885), (3735, 5757), (4545, 4731)]