81949520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{60257}}^1$

素因数の和:60287

約数の個数: 40

約数和(自身を含む): 201743784

約数和(自身を除く): 119794264

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 60257, 120514, 241028, 301285, 482056, 602570, 964112, 1024369, 1205140, 2048738, 2410280, 4097476, 4820560, 5121845, 8194952, 10243690, 16389904, 20487380, 40974760, 81949520]

約数ペア:

[(1, 81949520), (2, 40974760), (4, 20487380), (5, 16389904), (8, 10243690), (10, 8194952), (16, 5121845), (17, 4820560), (20, 4097476), (34, 2410280), (40, 2048738), (68, 1205140), (80, 1024369), (85, 964112), (136, 602570), (170, 482056), (272, 301285), (340, 241028), (680, 120514), (1360, 60257)]