81619615

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2099}}^1$

素因数の和:2223

約数の個数: 32

約数和(自身を含む): 123379200

約数和(自身を除く): 41759585

約数列:

[1, 5, 7, 11, 35, 55, 77, 101, 385, 505, 707, 1111, 2099, 3535, 5555, 7777, 10495, 14693, 23089, 38885, 73465, 115445, 161623, 211999, 808115, 1059995, 1483993, 2331989, 7419965, 11659945, 16323923, 81619615]

約数ペア:

[(1, 81619615), (5, 16323923), (7, 11659945), (11, 7419965), (35, 2331989), (55, 1483993), (77, 1059995), (101, 808115), (385, 211999), (505, 161623), (707, 115445), (1111, 73465), (2099, 38885), (3535, 23089), (5555, 14693), (7777, 10495)]