18880080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{811}}^1$

素因数の和:924

約数の個数: 80

約数和(自身を含む): 59204544

約数和(自身を除く): 40324464

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 97, 120, 194, 240, 291, 388, 485, 582, 776, 811, 970, 1164, 1455, 1552, 1622, 1940, 2328, 2433, 2910, 3244, 3880, 4055, 4656, 4866, 5820, 6488, 7760, 8110, 9732, 11640, 12165, 12976, 16220, 19464, 23280, 24330, 32440, 38928, 48660, 64880, 78667, 97320, 157334, 194640, 236001, 314668, 393335, 472002, 629336, 786670, 944004, 1180005, 1258672, 1573340, 1888008, 2360010, 3146680, 3776016, 4720020, 6293360, 9440040, 18880080]

約数ペア:

[(1, 18880080), (2, 9440040), (3, 6293360), (4, 4720020), (5, 3776016), (6, 3146680), (8, 2360010), (10, 1888008), (12, 1573340), (15, 1258672), (16, 1180005), (20, 944004), (24, 786670), (30, 629336), (40, 472002), (48, 393335), (60, 314668), (80, 236001), (97, 194640), (120, 157334), (194, 97320), (240, 78667), (291, 64880), (388, 48660), (485, 38928), (582, 32440), (776, 24330), (811, 23280), (970, 19464), (1164, 16220), (1455, 12976), (1552, 12165), (1622, 11640), (1940, 9732), (2328, 8110), (2433, 7760), (2910, 6488), (3244, 5820), (3880, 4866), (4055, 4656)]