21078585

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{439}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 40360320

約数和(自身を除く): 19281735

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 97, 99, 165, 291, 439, 485, 495, 873, 1067, 1317, 1455, 2195, 3201, 3951, 4365, 4829, 5335, 6585, 9603, 14487, 16005, 19755, 24145, 42583, 43461, 48015, 72435, 127749, 212915, 217305, 383247, 468413, 638745, 1405239, 1916235, 2342065, 4215717, 7026195, 21078585]

約数ペア:

[(1, 21078585), (3, 7026195), (5, 4215717), (9, 2342065), (11, 1916235), (15, 1405239), (33, 638745), (45, 468413), (55, 383247), (97, 217305), (99, 212915), (165, 127749), (291, 72435), (439, 48015), (485, 43461), (495, 42583), (873, 24145), (1067, 19755), (1317, 16005), (1455, 14487), (2195, 9603), (3201, 6585), (3951, 5335), (4365, 4829)]