81639138

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{3023}}^1$

素因数の和:3678

約数の個数: 32

約数和(自身を含む): 186955776

約数和(自身を除く): 105316638

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 643, 1286, 1929, 3023, 3858, 4501, 6046, 9002, 9069, 13503, 18138, 21161, 27006, 42322, 63483, 126966, 1943789, 3887578, 5831367, 11662734, 13606523, 27213046, 40819569, 81639138]

約数ペア:

[(1, 81639138), (2, 40819569), (3, 27213046), (6, 13606523), (7, 11662734), (14, 5831367), (21, 3887578), (42, 1943789), (643, 126966), (1286, 63483), (1929, 42322), (3023, 27006), (3858, 21161), (4501, 18138), (6046, 13503), (9002, 9069)]