21985215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5659}}^1$

素因数の和:5711

約数の個数: 32

約数和(自身を含む): 41295360

約数和(自身を除く): 19310145

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295, 3885, 5659, 16977, 28295, 39613, 84885, 118839, 198065, 209383, 594195, 628149, 1046915, 1465681, 3140745, 4397043, 7328405, 21985215]

約数ペア:

[(1, 21985215), (3, 7328405), (5, 4397043), (7, 3140745), (15, 1465681), (21, 1046915), (35, 628149), (37, 594195), (105, 209383), (111, 198065), (185, 118839), (259, 84885), (555, 39613), (777, 28295), (1295, 16977), (3885, 5659)]