19997752

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{953}}^1$

素因数の和:1063

約数の個数: 32

約数和(自身を含む): 39037680

約数和(自身を除く): 19039928

約数列:

[1, 2, 4, 8, 43, 61, 86, 122, 172, 244, 344, 488, 953, 1906, 2623, 3812, 5246, 7624, 10492, 20984, 40979, 58133, 81958, 116266, 163916, 232532, 327832, 465064, 2499719, 4999438, 9998876, 19997752]

約数ペア:

[(1, 19997752), (2, 9998876), (4, 4999438), (8, 2499719), (43, 465064), (61, 327832), (86, 232532), (122, 163916), (172, 116266), (244, 81958), (344, 58133), (488, 40979), (953, 20984), (1906, 10492), (2623, 7624), (3812, 5246)]