21663537

素因数分解:

$3^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{569}}^1$

素因数の和:630

約数の個数: 32

約数和(自身を含む): 34656000

約数和(自身を除く): 12992463

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 343, 569, 777, 1029, 1707, 1813, 3983, 5439, 11949, 12691, 21053, 27881, 38073, 63159, 83643, 147371, 195167, 442113, 585501, 1031597, 3094791, 7221179, 21663537]

約数ペア:

[(1, 21663537), (3, 7221179), (7, 3094791), (21, 1031597), (37, 585501), (49, 442113), (111, 195167), (147, 147371), (259, 83643), (343, 63159), (569, 38073), (777, 27881), (1029, 21053), (1707, 12691), (1813, 11949), (3983, 5439)]