21581076

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{167}}^1$

素因数の和:285

約数の個数: 72

約数和(自身を含む): 56306880

約数和(自身を除く): 34725804

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 89, 121, 132, 167, 178, 242, 267, 334, 356, 363, 484, 501, 534, 668, 726, 979, 1002, 1068, 1452, 1837, 1958, 2004, 2937, 3674, 3916, 5511, 5874, 7348, 10769, 11022, 11748, 14863, 20207, 21538, 22044, 29726, 32307, 40414, 43076, 44589, 59452, 60621, 64614, 80828, 89178, 121242, 129228, 163493, 178356, 242484, 326986, 490479, 653972, 980958, 1798423, 1961916, 3596846, 5395269, 7193692, 10790538, 21581076]

約数ペア:

[(1, 21581076), (2, 10790538), (3, 7193692), (4, 5395269), (6, 3596846), (11, 1961916), (12, 1798423), (22, 980958), (33, 653972), (44, 490479), (66, 326986), (89, 242484), (121, 178356), (132, 163493), (167, 129228), (178, 121242), (242, 89178), (267, 80828), (334, 64614), (356, 60621), (363, 59452), (484, 44589), (501, 43076), (534, 40414), (668, 32307), (726, 29726), (979, 22044), (1002, 21538), (1068, 20207), (1452, 14863), (1837, 11748), (1958, 11022), (2004, 10769), (2937, 7348), (3674, 5874), (3916, 5511)]