218996865

素因数分解:

$3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17443}}^1$

素因数の和:17491

約数の個数: 40

約数和(自身を含む): 405259008

約数和(自身を除く): 186262143

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 279, 405, 465, 837, 1395, 2511, 4185, 12555, 17443, 52329, 87215, 156987, 261645, 470961, 540733, 784935, 1412883, 1622199, 2354805, 2703665, 4866597, 7064415, 8110995, 14599791, 24332985, 43799373, 72998955, 218996865]

約数ペア:

[(1, 218996865), (3, 72998955), (5, 43799373), (9, 24332985), (15, 14599791), (27, 8110995), (31, 7064415), (45, 4866597), (81, 2703665), (93, 2354805), (135, 1622199), (155, 1412883), (279, 784935), (405, 540733), (465, 470961), (837, 261645), (1395, 156987), (2511, 87215), (4185, 52329), (12555, 17443)]