216993420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{172217}}^1$

素因数の和:172239

約数の個数: 72

約数和(自身を含む): 752248224

約数和(自身を除く): 535254804

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, 172217, 344434, 516651, 688868, 861085, 1033302, 1205519, 1549953, 1722170, 2066604, 2411038, 2583255, 3099906, 3444340, 3616557, 4822076, 5166510, 6027595, 6199812, 7233114, 7749765, 10333020, 10849671, 12055190, 14466228, 15499530, 18082785, 21699342, 24110380, 30999060, 36165570, 43398684, 54248355, 72331140, 108496710, 216993420]

約数ペア:

[(1, 216993420), (2, 108496710), (3, 72331140), (4, 54248355), (5, 43398684), (6, 36165570), (7, 30999060), (9, 24110380), (10, 21699342), (12, 18082785), (14, 15499530), (15, 14466228), (18, 12055190), (20, 10849671), (21, 10333020), (28, 7749765), (30, 7233114), (35, 6199812), (36, 6027595), (42, 5166510), (45, 4822076), (60, 3616557), (63, 3444340), (70, 3099906), (84, 2583255), (90, 2411038), (105, 2066604), (126, 1722170), (140, 1549953), (180, 1205519), (210, 1033302), (252, 861085), (315, 688868), (420, 516651), (630, 344434), (1260, 172217)]