20191720

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{3343}}^1$

素因数の和:3505

約数の個数: 32

約数和(自身を含む): 45745920

約数和(自身を除く): 25554200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 3343, 6040, 6686, 13372, 16715, 26744, 33430, 66860, 133720, 504793, 1009586, 2019172, 2523965, 4038344, 5047930, 10095860, 20191720]

約数ペア:

[(1, 20191720), (2, 10095860), (4, 5047930), (5, 4038344), (8, 2523965), (10, 2019172), (20, 1009586), (40, 504793), (151, 133720), (302, 66860), (604, 33430), (755, 26744), (1208, 16715), (1510, 13372), (3020, 6686), (3343, 6040)]