81607760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{599}}^1$

素因数の和:756

約数の個数: 80

約数和(自身を含む): 206236800

約数和(自身を除く): 124629040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 131, 208, 260, 262, 520, 524, 599, 655, 1040, 1048, 1198, 1310, 1703, 2096, 2396, 2620, 2995, 3406, 4792, 5240, 5990, 6812, 7787, 8515, 9584, 10480, 11980, 13624, 15574, 17030, 23960, 27248, 31148, 34060, 38935, 47920, 62296, 68120, 77870, 78469, 124592, 136240, 155740, 156938, 311480, 313876, 392345, 622960, 627752, 784690, 1020097, 1255504, 1569380, 2040194, 3138760, 4080388, 5100485, 6277520, 8160776, 10200970, 16321552, 20401940, 40803880, 81607760]

約数ペア:

[(1, 81607760), (2, 40803880), (4, 20401940), (5, 16321552), (8, 10200970), (10, 8160776), (13, 6277520), (16, 5100485), (20, 4080388), (26, 3138760), (40, 2040194), (52, 1569380), (65, 1255504), (80, 1020097), (104, 784690), (130, 627752), (131, 622960), (208, 392345), (260, 313876), (262, 311480), (520, 156938), (524, 155740), (599, 136240), (655, 124592), (1040, 78469), (1048, 77870), (1198, 68120), (1310, 62296), (1703, 47920), (2096, 38935), (2396, 34060), (2620, 31148), (2995, 27248), (3406, 23960), (4792, 17030), (5240, 15574), (5990, 13624), (6812, 11980), (7787, 10480), (8515, 9584)]