21686110

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{487}}^1$

素因数の和:628

約数の個数: 32

約数和(自身を含む): 40300992

約数和(自身を除く): 18614882

約数列:

[1, 2, 5, 10, 61, 73, 122, 146, 305, 365, 487, 610, 730, 974, 2435, 4453, 4870, 8906, 22265, 29707, 35551, 44530, 59414, 71102, 148535, 177755, 297070, 355510, 2168611, 4337222, 10843055, 21686110]

約数ペア:

[(1, 21686110), (2, 10843055), (5, 4337222), (10, 2168611), (61, 355510), (73, 297070), (122, 177755), (146, 148535), (305, 71102), (365, 59414), (487, 44530), (610, 35551), (730, 29707), (974, 22265), (2435, 8906), (4453, 4870)]