20735715

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1381}}^1$

素因数の和:1420

約数の個数: 64

約数和(自身を含む): 44577792

約数和(自身を除く): 23842077

約数列:

[1, 3, 5, 7, 11, 13, 15, 21, 33, 35, 39, 55, 65, 77, 91, 105, 143, 165, 195, 231, 273, 385, 429, 455, 715, 1001, 1155, 1365, 1381, 2145, 3003, 4143, 5005, 6905, 9667, 15015, 15191, 17953, 20715, 29001, 45573, 48335, 53859, 75955, 89765, 106337, 125671, 145005, 197483, 227865, 269295, 319011, 377013, 531685, 592449, 628355, 987415, 1382381, 1595055, 1885065, 2962245, 4147143, 6911905, 20735715]

約数ペア:

[(1, 20735715), (3, 6911905), (5, 4147143), (7, 2962245), (11, 1885065), (13, 1595055), (15, 1382381), (21, 987415), (33, 628355), (35, 592449), (39, 531685), (55, 377013), (65, 319011), (77, 269295), (91, 227865), (105, 197483), (143, 145005), (165, 125671), (195, 106337), (231, 89765), (273, 75955), (385, 53859), (429, 48335), (455, 45573), (715, 29001), (1001, 20715), (1155, 17953), (1365, 15191), (1381, 15015), (2145, 9667), (3003, 6905), (4143, 5005)]