20026720

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{17881}}^1$

素因数の和:17903

約数の個数: 48

約数和(自身を含む): 54075168

約数和(自身を除く): 34048448

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 17881, 35762, 71524, 89405, 125167, 143048, 178810, 250334, 286096, 357620, 500668, 572192, 625835, 715240, 1001336, 1251670, 1430480, 2002672, 2503340, 2860960, 4005344, 5006680, 10013360, 20026720]

約数ペア:

[(1, 20026720), (2, 10013360), (4, 5006680), (5, 4005344), (7, 2860960), (8, 2503340), (10, 2002672), (14, 1430480), (16, 1251670), (20, 1001336), (28, 715240), (32, 625835), (35, 572192), (40, 500668), (56, 357620), (70, 286096), (80, 250334), (112, 178810), (140, 143048), (160, 125167), (224, 89405), (280, 71524), (560, 35762), (1120, 17881)]