21970440

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{6781}}^1$

素因数の和:6804

約数の個数: 80

約数和(自身を含む): 73855980

約数和(自身を除く): 51885540

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 270, 324, 360, 405, 540, 648, 810, 1080, 1620, 3240, 6781, 13562, 20343, 27124, 33905, 40686, 54248, 61029, 67810, 81372, 101715, 122058, 135620, 162744, 183087, 203430, 244116, 271240, 305145, 366174, 406860, 488232, 549261, 610290, 732348, 813720, 915435, 1098522, 1220580, 1464696, 1830870, 2197044, 2441160, 2746305, 3661740, 4394088, 5492610, 7323480, 10985220, 21970440]

約数ペア:

[(1, 21970440), (2, 10985220), (3, 7323480), (4, 5492610), (5, 4394088), (6, 3661740), (8, 2746305), (9, 2441160), (10, 2197044), (12, 1830870), (15, 1464696), (18, 1220580), (20, 1098522), (24, 915435), (27, 813720), (30, 732348), (36, 610290), (40, 549261), (45, 488232), (54, 406860), (60, 366174), (72, 305145), (81, 271240), (90, 244116), (108, 203430), (120, 183087), (135, 162744), (162, 135620), (180, 122058), (216, 101715), (270, 81372), (324, 67810), (360, 61029), (405, 54248), (540, 40686), (648, 33905), (810, 27124), (1080, 20343), (1620, 13562), (3240, 6781)]