20836815

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1993}}^1$

素因数の和:2059

約数の個数: 32

約数和(自身を含む): 36179136

約数和(自身を除く): 15342321

約数列:

[1, 3, 5, 15, 17, 41, 51, 85, 123, 205, 255, 615, 697, 1993, 2091, 3485, 5979, 9965, 10455, 29895, 33881, 81713, 101643, 169405, 245139, 408565, 508215, 1225695, 1389121, 4167363, 6945605, 20836815]

約数ペア:

[(1, 20836815), (3, 6945605), (5, 4167363), (15, 1389121), (17, 1225695), (41, 508215), (51, 408565), (85, 245139), (123, 169405), (205, 101643), (255, 81713), (615, 33881), (697, 29895), (1993, 10455), (2091, 9965), (3485, 5979)]