20836413

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:163

約数の個数: 64

約数和(自身を含む): 36288000

約数和(自身を除く): 15451587

約数列:

[1, 3, 9, 13, 23, 27, 29, 39, 69, 87, 89, 117, 207, 261, 267, 299, 351, 377, 621, 667, 783, 801, 897, 1131, 1157, 2001, 2047, 2403, 2581, 2691, 3393, 3471, 6003, 6141, 7743, 8073, 8671, 10179, 10413, 18009, 18423, 23229, 26013, 26611, 31239, 33553, 55269, 59363, 69687, 78039, 79833, 100659, 178089, 234117, 239499, 301977, 534267, 718497, 771719, 905931, 1602801, 2315157, 6945471, 20836413]

約数ペア:

[(1, 20836413), (3, 6945471), (9, 2315157), (13, 1602801), (23, 905931), (27, 771719), (29, 718497), (39, 534267), (69, 301977), (87, 239499), (89, 234117), (117, 178089), (207, 100659), (261, 79833), (267, 78039), (299, 69687), (351, 59363), (377, 55269), (621, 33553), (667, 31239), (783, 26611), (801, 26013), (897, 23229), (1131, 18423), (1157, 18009), (2001, 10413), (2047, 10179), (2403, 8671), (2581, 8073), (2691, 7743), (3393, 6141), (3471, 6003)]