21393585

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4283}}^1$

素因数の和:4334

約数の個数: 32

約数和(自身を含む): 39070080

約数和(自身を除く): 17676495

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 111, 135, 185, 333, 555, 999, 1665, 4283, 4995, 12849, 21415, 38547, 64245, 115641, 158471, 192735, 475413, 578205, 792355, 1426239, 2377065, 4278717, 7131195, 21393585]

約数ペア:

[(1, 21393585), (3, 7131195), (5, 4278717), (9, 2377065), (15, 1426239), (27, 792355), (37, 578205), (45, 475413), (111, 192735), (135, 158471), (185, 115641), (333, 64245), (555, 38547), (999, 21415), (1665, 12849), (4283, 4995)]