21860265

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{3413}}^1$

素因数の和:3489

約数の個数: 32

約数和(自身を含む): 40640256

約数和(自身を除く): 18779991

約数列:

[1, 3, 5, 7, 15, 21, 35, 61, 105, 183, 305, 427, 915, 1281, 2135, 3413, 6405, 10239, 17065, 23891, 51195, 71673, 119455, 208193, 358365, 624579, 1040965, 1457351, 3122895, 4372053, 7286755, 21860265]

約数ペア:

[(1, 21860265), (3, 7286755), (5, 4372053), (7, 3122895), (15, 1457351), (21, 1040965), (35, 624579), (61, 358365), (105, 208193), (183, 119455), (305, 71673), (427, 51195), (915, 23891), (1281, 17065), (2135, 10239), (3413, 6405)]