21427740

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{4409}}^1$

素因数の和:4433

約数の個数: 72

約数和(自身を含む): 67420080

約数和(自身を除く): 45992340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4409, 4860, 8818, 13227, 17636, 22045, 26454, 39681, 44090, 52908, 66135, 79362, 88180, 119043, 132270, 158724, 198405, 238086, 264540, 357129, 396810, 476172, 595215, 714258, 793620, 1071387, 1190430, 1428516, 1785645, 2142774, 2380860, 3571290, 4285548, 5356935, 7142580, 10713870, 21427740]

約数ペア:

[(1, 21427740), (2, 10713870), (3, 7142580), (4, 5356935), (5, 4285548), (6, 3571290), (9, 2380860), (10, 2142774), (12, 1785645), (15, 1428516), (18, 1190430), (20, 1071387), (27, 793620), (30, 714258), (36, 595215), (45, 476172), (54, 396810), (60, 357129), (81, 264540), (90, 238086), (108, 198405), (135, 158724), (162, 132270), (180, 119043), (243, 88180), (270, 79362), (324, 66135), (405, 52908), (486, 44090), (540, 39681), (810, 26454), (972, 22045), (1215, 17636), (1620, 13227), (2430, 8818), (4409, 4860)]