21429520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2251}}^1$

素因数の和:2288

約数の個数: 80

約数和(自身を含む): 60317568

約数和(自身を除く): 38888048

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, 2251, 2380, 4502, 4760, 9004, 9520, 11255, 15757, 18008, 22510, 31514, 36016, 38267, 45020, 63028, 76534, 78785, 90040, 126056, 153068, 157570, 180080, 191335, 252112, 267869, 306136, 315140, 382670, 535738, 612272, 630280, 765340, 1071476, 1260560, 1339345, 1530680, 2142952, 2678690, 3061360, 4285904, 5357380, 10714760, 21429520]

約数ペア:

[(1, 21429520), (2, 10714760), (4, 5357380), (5, 4285904), (7, 3061360), (8, 2678690), (10, 2142952), (14, 1530680), (16, 1339345), (17, 1260560), (20, 1071476), (28, 765340), (34, 630280), (35, 612272), (40, 535738), (56, 382670), (68, 315140), (70, 306136), (80, 267869), (85, 252112), (112, 191335), (119, 180080), (136, 157570), (140, 153068), (170, 126056), (238, 90040), (272, 78785), (280, 76534), (340, 63028), (476, 45020), (560, 38267), (595, 36016), (680, 31514), (952, 22510), (1190, 18008), (1360, 15757), (1904, 11255), (2251, 9520), (2380, 9004), (4502, 4760)]