21974895

素因数分解:

$3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1871}}^1$

素因数の和:1917

約数の個数: 40

約数和(自身を含む): 40772160

約数和(自身を除く): 18797265

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 261, 405, 435, 783, 1305, 1871, 2349, 3915, 5613, 9355, 11745, 16839, 28065, 50517, 54259, 84195, 151551, 162777, 252585, 271295, 488331, 757755, 813885, 1464993, 2441655, 4394979, 7324965, 21974895]

約数ペア:

[(1, 21974895), (3, 7324965), (5, 4394979), (9, 2441655), (15, 1464993), (27, 813885), (29, 757755), (45, 488331), (81, 271295), (87, 252585), (135, 162777), (145, 151551), (261, 84195), (405, 54259), (435, 50517), (783, 28065), (1305, 16839), (1871, 11745), (2349, 9355), (3915, 5613)]