21420072

素因数分解:

$2^3\times 3^3\times {\mathrm{131}}^1\times {\mathrm{757}}^1$

素因数の和:903

約数の個数: 64

約数和(自身を含む): 60033600

約数和(自身を除く): 38613528

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 131, 216, 262, 393, 524, 757, 786, 1048, 1179, 1514, 1572, 2271, 2358, 3028, 3144, 3537, 4542, 4716, 6056, 6813, 7074, 9084, 9432, 13626, 14148, 18168, 20439, 27252, 28296, 40878, 54504, 81756, 99167, 163512, 198334, 297501, 396668, 595002, 793336, 892503, 1190004, 1785006, 2380008, 2677509, 3570012, 5355018, 7140024, 10710036, 21420072]

約数ペア:

[(1, 21420072), (2, 10710036), (3, 7140024), (4, 5355018), (6, 3570012), (8, 2677509), (9, 2380008), (12, 1785006), (18, 1190004), (24, 892503), (27, 793336), (36, 595002), (54, 396668), (72, 297501), (108, 198334), (131, 163512), (216, 99167), (262, 81756), (393, 54504), (524, 40878), (757, 28296), (786, 27252), (1048, 20439), (1179, 18168), (1514, 14148), (1572, 13626), (2271, 9432), (2358, 9084), (3028, 7074), (3144, 6813), (3537, 6056), (4542, 4716)]