20825140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7829}}^1$

素因数の和:7864

約数の個数: 48

約数和(自身を含む): 52617600

約数和(自身を除く): 31792460

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7829, 15658, 31316, 39145, 54803, 78290, 109606, 148751, 156580, 219212, 274015, 297502, 548030, 595004, 743755, 1041257, 1096060, 1487510, 2082514, 2975020, 4165028, 5206285, 10412570, 20825140]

約数ペア:

[(1, 20825140), (2, 10412570), (4, 5206285), (5, 4165028), (7, 2975020), (10, 2082514), (14, 1487510), (19, 1096060), (20, 1041257), (28, 743755), (35, 595004), (38, 548030), (70, 297502), (76, 274015), (95, 219212), (133, 156580), (140, 148751), (190, 109606), (266, 78290), (380, 54803), (532, 39145), (665, 31316), (1330, 15658), (2660, 7829)]