21213195

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{2029}}^1$

素因数の和:2095

約数の個数: 32

約数和(自身を含む): 36832320

約数和(自身を除く): 15619125

約数列:

[1, 3, 5, 15, 17, 41, 51, 85, 123, 205, 255, 615, 697, 2029, 2091, 3485, 6087, 10145, 10455, 30435, 34493, 83189, 103479, 172465, 249567, 415945, 517395, 1247835, 1414213, 4242639, 7071065, 21213195]

約数ペア:

[(1, 21213195), (3, 7071065), (5, 4242639), (15, 1414213), (17, 1247835), (41, 517395), (51, 415945), (85, 249567), (123, 172465), (205, 103479), (255, 83189), (615, 34493), (697, 30435), (2029, 10455), (2091, 10145), (3485, 6087)]