21612780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1009}}^1$

素因数の和:1048

約数の個数: 144

約数和(自身を含む): 79410240

約数和(自身を除く): 57797460

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 28, 30, 34, 35, 36, 42, 45, 51, 60, 63, 68, 70, 84, 85, 90, 102, 105, 119, 126, 140, 153, 170, 180, 204, 210, 238, 252, 255, 306, 315, 340, 357, 420, 476, 510, 595, 612, 630, 714, 765, 1009, 1020, 1071, 1190, 1260, 1428, 1530, 1785, 2018, 2142, 2380, 3027, 3060, 3570, 4036, 4284, 5045, 5355, 6054, 7063, 7140, 9081, 10090, 10710, 12108, 14126, 15135, 17153, 18162, 20180, 21189, 21420, 28252, 30270, 34306, 35315, 36324, 42378, 45405, 51459, 60540, 63567, 68612, 70630, 84756, 85765, 90810, 102918, 105945, 120071, 127134, 141260, 154377, 171530, 181620, 205836, 211890, 240142, 254268, 257295, 308754, 317835, 343060, 360213, 423780, 480284, 514590, 600355, 617508, 635670, 720426, 771885, 1029180, 1080639, 1200710, 1271340, 1440852, 1543770, 1801065, 2161278, 2401420, 3087540, 3602130, 4322556, 5403195, 7204260, 10806390, 21612780]

約数ペア:

[(1, 21612780), (2, 10806390), (3, 7204260), (4, 5403195), (5, 4322556), (6, 3602130), (7, 3087540), (9, 2401420), (10, 2161278), (12, 1801065), (14, 1543770), (15, 1440852), (17, 1271340), (18, 1200710), (20, 1080639), (21, 1029180), (28, 771885), (30, 720426), (34, 635670), (35, 617508), (36, 600355), (42, 514590), (45, 480284), (51, 423780), (60, 360213), (63, 343060), (68, 317835), (70, 308754), (84, 257295), (85, 254268), (90, 240142), (102, 211890), (105, 205836), (119, 181620), (126, 171530), (140, 154377), (153, 141260), (170, 127134), (180, 120071), (204, 105945), (210, 102918), (238, 90810), (252, 85765), (255, 84756), (306, 70630), (315, 68612), (340, 63567), (357, 60540), (420, 51459), (476, 45405), (510, 42378), (595, 36324), (612, 35315), (630, 34306), (714, 30270), (765, 28252), (1009, 21420), (1020, 21189), (1071, 20180), (1190, 18162), (1260, 17153), (1428, 15135), (1530, 14126), (1785, 12108), (2018, 10710), (2142, 10090), (2380, 9081), (3027, 7140), (3060, 7063), (3570, 6054), (4036, 5355), (4284, 5045)]