21485014760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{253003}}^1$

素因数の和:253218

約数の個数: 64

約数和(自身を含む): 53009398080

約数和(自身を除く): 31524383320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 193, 220, 386, 440, 772, 965, 1544, 1930, 2123, 3860, 4246, 7720, 8492, 10615, 16984, 21230, 42460, 84920, 253003, 506006, 1012012, 1265015, 2024024, 2530030, 2783033, 5060060, 5566066, 10120120, 11132132, 13915165, 22264264, 27830330, 48829579, 55660660, 97659158, 111321320, 195318316, 244147895, 390636632, 488295790, 537125369, 976591580, 1074250738, 1953183160, 2148501476, 2685626845, 4297002952, 5371253690, 10742507380, 21485014760]

約数ペア:

[(1, 21485014760), (2, 10742507380), (4, 5371253690), (5, 4297002952), (8, 2685626845), (10, 2148501476), (11, 1953183160), (20, 1074250738), (22, 976591580), (40, 537125369), (44, 488295790), (55, 390636632), (88, 244147895), (110, 195318316), (193, 111321320), (220, 97659158), (386, 55660660), (440, 48829579), (772, 27830330), (965, 22264264), (1544, 13915165), (1930, 11132132), (2123, 10120120), (3860, 5566066), (4246, 5060060), (7720, 2783033), (8492, 2530030), (10615, 2024024), (16984, 1265015), (21230, 1012012), (42460, 506006), (84920, 253003)]