20019376

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{883}}^1$

素因数の和:1013

約数の個数: 40

約数和(自身を含む): 42202160

約数和(自身を除く): 22182784

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 109, 208, 218, 436, 872, 883, 1417, 1744, 1766, 2834, 3532, 5668, 7064, 11336, 11479, 14128, 22672, 22958, 45916, 91832, 96247, 183664, 192494, 384988, 769976, 1251211, 1539952, 2502422, 5004844, 10009688, 20019376]

約数ペア:

[(1, 20019376), (2, 10009688), (4, 5004844), (8, 2502422), (13, 1539952), (16, 1251211), (26, 769976), (52, 384988), (104, 192494), (109, 183664), (208, 96247), (218, 91832), (436, 45916), (872, 22958), (883, 22672), (1417, 14128), (1744, 11479), (1766, 11336), (2834, 7064), (3532, 5668)]