21081340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6547}}^1$

素因数の和:6586

約数の個数: 48

約数和(自身を含む): 52803072

約数和(自身を除く): 31721732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6547, 13094, 26188, 32735, 45829, 65470, 91658, 130940, 150581, 183316, 229145, 301162, 458290, 602324, 752905, 916580, 1054067, 1505810, 2108134, 3011620, 4216268, 5270335, 10540670, 21081340]

約数ペア:

[(1, 21081340), (2, 10540670), (4, 5270335), (5, 4216268), (7, 3011620), (10, 2108134), (14, 1505810), (20, 1054067), (23, 916580), (28, 752905), (35, 602324), (46, 458290), (70, 301162), (92, 229145), (115, 183316), (140, 150581), (161, 130940), (230, 91658), (322, 65470), (460, 45829), (644, 32735), (805, 26188), (1610, 13094), (3220, 6547)]