21655755

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4861}}^1$

素因数の和:4889

約数の個数: 40

約数和(自身を含む): 42357744

約数和(自身を除く): 20701989

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 297, 405, 495, 891, 1485, 4455, 4861, 14583, 24305, 43749, 53471, 72915, 131247, 160413, 218745, 267355, 393741, 481239, 656235, 802065, 1443717, 1968705, 2406195, 4331151, 7218585, 21655755]

約数ペア:

[(1, 21655755), (3, 7218585), (5, 4331151), (9, 2406195), (11, 1968705), (15, 1443717), (27, 802065), (33, 656235), (45, 481239), (55, 393741), (81, 267355), (99, 218745), (135, 160413), (165, 131247), (297, 72915), (405, 53471), (495, 43749), (891, 24305), (1485, 14583), (4455, 4861)]