21492165

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{947}}^1$

素因数の和:1061

約数の個数: 32

約数和(自身を含む): 36858240

約数和(自身を除く): 15366075

約数列:

[1, 3, 5, 15, 17, 51, 85, 89, 255, 267, 445, 947, 1335, 1513, 2841, 4539, 4735, 7565, 14205, 16099, 22695, 48297, 80495, 84283, 241485, 252849, 421415, 1264245, 1432811, 4298433, 7164055, 21492165]

約数ペア:

[(1, 21492165), (3, 7164055), (5, 4298433), (15, 1432811), (17, 1264245), (51, 421415), (85, 252849), (89, 241485), (255, 84283), (267, 80495), (445, 48297), (947, 22695), (1335, 16099), (1513, 14205), (2841, 7565), (4539, 4735)]