885157780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{261881}}^1$

素因数の和:261916

約数の個数: 36

約数和(自身を含む): 2012825052

約数和(自身を除く): 1127667272

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 261881, 523762, 1047524, 1309405, 2618810, 3404453, 5237620, 6808906, 13617812, 17022265, 34044530, 44257889, 68089060, 88515778, 177031556, 221289445, 442578890, 885157780]

約数ペア:

[(1, 885157780), (2, 442578890), (4, 221289445), (5, 177031556), (10, 88515778), (13, 68089060), (20, 44257889), (26, 34044530), (52, 17022265), (65, 13617812), (130, 6808906), (169, 5237620), (260, 3404453), (338, 2618810), (676, 1309405), (845, 1047524), (1690, 523762), (3380, 261881)]