21010640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2207}}^1$

素因数の和:2244

約数の個数: 80

約数和(自身を含む): 59139072

約数和(自身を除く): 38128432

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 340, 476, 560, 595, 680, 952, 1190, 1360, 1904, 2207, 2380, 4414, 4760, 8828, 9520, 11035, 15449, 17656, 22070, 30898, 35312, 37519, 44140, 61796, 75038, 77245, 88280, 123592, 150076, 154490, 176560, 187595, 247184, 262633, 300152, 308980, 375190, 525266, 600304, 617960, 750380, 1050532, 1235920, 1313165, 1500760, 2101064, 2626330, 3001520, 4202128, 5252660, 10505320, 21010640]

約数ペア:

[(1, 21010640), (2, 10505320), (4, 5252660), (5, 4202128), (7, 3001520), (8, 2626330), (10, 2101064), (14, 1500760), (16, 1313165), (17, 1235920), (20, 1050532), (28, 750380), (34, 617960), (35, 600304), (40, 525266), (56, 375190), (68, 308980), (70, 300152), (80, 262633), (85, 247184), (112, 187595), (119, 176560), (136, 154490), (140, 150076), (170, 123592), (238, 88280), (272, 77245), (280, 75038), (340, 61796), (476, 44140), (560, 37519), (595, 35312), (680, 30898), (952, 22070), (1190, 17656), (1360, 15449), (1904, 11035), (2207, 9520), (2380, 8828), (4414, 4760)]