21000270978

素因数分解:

$2^1\times 3^3\times {\mathrm{103}}^1\times {\mathrm{113}}^1\times {\mathrm{33413}}^1$

素因数の和:33640

約数の個数: 64

約数和(自身を含む): 47538766080

約数和(自身を除く): 26538495102

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 103, 113, 206, 226, 309, 339, 618, 678, 927, 1017, 1854, 2034, 2781, 3051, 5562, 6102, 11639, 23278, 33413, 34917, 66826, 69834, 100239, 104751, 200478, 209502, 300717, 314253, 601434, 628506, 902151, 1804302, 3441539, 3775669, 6883078, 7551338, 10324617, 11327007, 20649234, 22654014, 30973851, 33981021, 61947702, 67962042, 92921553, 101943063, 185843106, 203886126, 388893907, 777787814, 1166681721, 2333363442, 3500045163, 7000090326, 10500135489, 21000270978]

約数ペア:

[(1, 21000270978), (2, 10500135489), (3, 7000090326), (6, 3500045163), (9, 2333363442), (18, 1166681721), (27, 777787814), (54, 388893907), (103, 203886126), (113, 185843106), (206, 101943063), (226, 92921553), (309, 67962042), (339, 61947702), (618, 33981021), (678, 30973851), (927, 22654014), (1017, 20649234), (1854, 11327007), (2034, 10324617), (2781, 7551338), (3051, 6883078), (5562, 3775669), (6102, 3441539), (11639, 1804302), (23278, 902151), (33413, 628506), (34917, 601434), (66826, 314253), (69834, 300717), (100239, 209502), (104751, 200478)]