21992292

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{443}}^1$

素因数の和:657

約数の個数: 72

約数和(自身を含む): 63999936

約数和(自身を除く): 42007644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 197, 252, 394, 443, 591, 788, 886, 1182, 1329, 1379, 1772, 1773, 2364, 2658, 2758, 3101, 3546, 3987, 4137, 5316, 5516, 6202, 7092, 7974, 8274, 9303, 12404, 12411, 15948, 16548, 18606, 24822, 27909, 37212, 49644, 55818, 87271, 111636, 174542, 261813, 349084, 523626, 610897, 785439, 1047252, 1221794, 1570878, 1832691, 2443588, 3141756, 3665382, 5498073, 7330764, 10996146, 21992292]

約数ペア:

[(1, 21992292), (2, 10996146), (3, 7330764), (4, 5498073), (6, 3665382), (7, 3141756), (9, 2443588), (12, 1832691), (14, 1570878), (18, 1221794), (21, 1047252), (28, 785439), (36, 610897), (42, 523626), (63, 349084), (84, 261813), (126, 174542), (197, 111636), (252, 87271), (394, 55818), (443, 49644), (591, 37212), (788, 27909), (886, 24822), (1182, 18606), (1329, 16548), (1379, 15948), (1772, 12411), (1773, 12404), (2364, 9303), (2658, 8274), (2758, 7974), (3101, 7092), (3546, 6202), (3987, 5516), (4137, 5316)]