21411320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1627}}^1$

素因数の和:1692

約数の個数: 64

約数和(自身を含む): 56263680

約数和(自身を除く): 34852360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1316, 1627, 1645, 1880, 2632, 3254, 3290, 6508, 6580, 8135, 11389, 13016, 13160, 16270, 22778, 32540, 45556, 56945, 65080, 76469, 91112, 113890, 152938, 227780, 305876, 382345, 455560, 535283, 611752, 764690, 1070566, 1529380, 2141132, 2676415, 3058760, 4282264, 5352830, 10705660, 21411320]

約数ペア:

[(1, 21411320), (2, 10705660), (4, 5352830), (5, 4282264), (7, 3058760), (8, 2676415), (10, 2141132), (14, 1529380), (20, 1070566), (28, 764690), (35, 611752), (40, 535283), (47, 455560), (56, 382345), (70, 305876), (94, 227780), (140, 152938), (188, 113890), (235, 91112), (280, 76469), (329, 65080), (376, 56945), (470, 45556), (658, 32540), (940, 22778), (1316, 16270), (1627, 13160), (1645, 13016), (1880, 11389), (2632, 8135), (3254, 6580), (3290, 6508)]