21140280

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{8389}}^1$

素因数の和:8413

約数の個数: 96

約数和(自身を含む): 78530400

約数和(自身を除く): 57390120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 8389, 16778, 25167, 33556, 41945, 50334, 58723, 67112, 75501, 83890, 100668, 117446, 125835, 151002, 167780, 176169, 201336, 234892, 251670, 293615, 302004, 335560, 352338, 377505, 469784, 503340, 528507, 587230, 604008, 704676, 755010, 880845, 1006680, 1057014, 1174460, 1409352, 1510020, 1761690, 2114028, 2348920, 2642535, 3020040, 3523380, 4228056, 5285070, 7046760, 10570140, 21140280]

約数ペア:

[(1, 21140280), (2, 10570140), (3, 7046760), (4, 5285070), (5, 4228056), (6, 3523380), (7, 3020040), (8, 2642535), (9, 2348920), (10, 2114028), (12, 1761690), (14, 1510020), (15, 1409352), (18, 1174460), (20, 1057014), (21, 1006680), (24, 880845), (28, 755010), (30, 704676), (35, 604008), (36, 587230), (40, 528507), (42, 503340), (45, 469784), (56, 377505), (60, 352338), (63, 335560), (70, 302004), (72, 293615), (84, 251670), (90, 234892), (105, 201336), (120, 176169), (126, 167780), (140, 151002), (168, 125835), (180, 117446), (210, 100668), (252, 83890), (280, 75501), (315, 67112), (360, 58723), (420, 50334), (504, 41945), (630, 33556), (840, 25167), (1260, 16778), (2520, 8389)]