28687140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{809}}^1$

素因数の和:1021

約数の個数: 72

約数和(自身を含む): 87567480

約数和(自身を除く): 58880340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 197, 394, 591, 788, 809, 985, 1182, 1618, 1773, 1970, 2364, 2427, 2955, 3236, 3546, 3940, 4045, 4854, 5910, 7092, 7281, 8090, 8865, 9708, 11820, 12135, 14562, 16180, 17730, 24270, 29124, 35460, 36405, 48540, 72810, 145620, 159373, 318746, 478119, 637492, 796865, 956238, 1434357, 1593730, 1912476, 2390595, 2868714, 3187460, 4781190, 5737428, 7171785, 9562380, 14343570, 28687140]

約数ペア:

[(1, 28687140), (2, 14343570), (3, 9562380), (4, 7171785), (5, 5737428), (6, 4781190), (9, 3187460), (10, 2868714), (12, 2390595), (15, 1912476), (18, 1593730), (20, 1434357), (30, 956238), (36, 796865), (45, 637492), (60, 478119), (90, 318746), (180, 159373), (197, 145620), (394, 72810), (591, 48540), (788, 36405), (809, 35460), (985, 29124), (1182, 24270), (1618, 17730), (1773, 16180), (1970, 14562), (2364, 12135), (2427, 11820), (2955, 9708), (3236, 8865), (3546, 8090), (3940, 7281), (4045, 7092), (4854, 5910)]