21309345

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{5443}}^1$

素因数の和:5486

約数の個数: 32

約数和(自身を含む): 39196800

約数和(自身を除く): 17887455

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 3915, 5443, 16329, 27215, 48987, 81645, 146961, 157847, 244935, 473541, 734805, 789235, 1420623, 2367705, 4261869, 7103115, 21309345]

約数ペア:

[(1, 21309345), (3, 7103115), (5, 4261869), (9, 2367705), (15, 1420623), (27, 789235), (29, 734805), (45, 473541), (87, 244935), (135, 157847), (145, 146961), (261, 81645), (435, 48987), (783, 27215), (1305, 16329), (3915, 5443)]