81775520

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16487}}^1$

素因数の和:16533

約数の個数: 48

約数和(自身を含む): 199438848

約数和(自身を除く): 117663328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4960, 16487, 32974, 65948, 82435, 131896, 164870, 263792, 329740, 511097, 527584, 659480, 1022194, 1318960, 2044388, 2555485, 2637920, 4088776, 5110970, 8177552, 10221940, 16355104, 20443880, 40887760, 81775520]

約数ペア:

[(1, 81775520), (2, 40887760), (4, 20443880), (5, 16355104), (8, 10221940), (10, 8177552), (16, 5110970), (20, 4088776), (31, 2637920), (32, 2555485), (40, 2044388), (62, 1318960), (80, 1022194), (124, 659480), (155, 527584), (160, 511097), (248, 329740), (310, 263792), (496, 164870), (620, 131896), (992, 82435), (1240, 65948), (2480, 32974), (4960, 16487)]