21340788

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1063}}^1$

素因数の和:1316

約数の個数: 48

約数和(自身を含む): 57200640

約数和(自身を除く): 35859852

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 239, 478, 717, 956, 1063, 1434, 1673, 2126, 2868, 3189, 3346, 4252, 5019, 6378, 6692, 7441, 10038, 12756, 14882, 20076, 22323, 29764, 44646, 89292, 254057, 508114, 762171, 1016228, 1524342, 1778399, 3048684, 3556798, 5335197, 7113596, 10670394, 21340788]

約数ペア:

[(1, 21340788), (2, 10670394), (3, 7113596), (4, 5335197), (6, 3556798), (7, 3048684), (12, 1778399), (14, 1524342), (21, 1016228), (28, 762171), (42, 508114), (84, 254057), (239, 89292), (478, 44646), (717, 29764), (956, 22323), (1063, 20076), (1434, 14882), (1673, 12756), (2126, 10038), (2868, 7441), (3189, 6692), (3346, 6378), (4252, 5019)]