21658140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17189}}^1$

素因数の和:17211

約数の個数: 72

約数和(自身を含む): 75085920

約数和(自身を除く): 53427780

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 17189, 34378, 51567, 68756, 85945, 103134, 120323, 154701, 171890, 206268, 240646, 257835, 309402, 343780, 360969, 481292, 515670, 601615, 618804, 721938, 773505, 1031340, 1082907, 1203230, 1443876, 1547010, 1804845, 2165814, 2406460, 3094020, 3609690, 4331628, 5414535, 7219380, 10829070, 21658140]

約数ペア:

[(1, 21658140), (2, 10829070), (3, 7219380), (4, 5414535), (5, 4331628), (6, 3609690), (7, 3094020), (9, 2406460), (10, 2165814), (12, 1804845), (14, 1547010), (15, 1443876), (18, 1203230), (20, 1082907), (21, 1031340), (28, 773505), (30, 721938), (35, 618804), (36, 601615), (42, 515670), (45, 481292), (60, 360969), (63, 343780), (70, 309402), (84, 257835), (90, 240646), (105, 206268), (126, 171890), (140, 154701), (180, 120323), (210, 103134), (252, 85945), (315, 68756), (420, 51567), (630, 34378), (1260, 17189)]