21355995

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{941}}^1$

素因数の和:1055

約数の個数: 32

約数和(自身を含む): 36624960

約数和(自身を除く): 15268965

約数列:

[1, 3, 5, 15, 17, 51, 85, 89, 255, 267, 445, 941, 1335, 1513, 2823, 4539, 4705, 7565, 14115, 15997, 22695, 47991, 79985, 83749, 239955, 251247, 418745, 1256235, 1423733, 4271199, 7118665, 21355995]

約数ペア:

[(1, 21355995), (3, 7118665), (5, 4271199), (15, 1423733), (17, 1256235), (51, 418745), (85, 251247), (89, 239955), (255, 83749), (267, 79985), (445, 47991), (941, 22695), (1335, 15997), (1513, 14115), (2823, 7565), (4539, 4705)]