1286420890

素因数分解:

$2^1\times 5^1\times {\mathrm{3203}}^1\times {\mathrm{40163}}^1$

素因数の和:43373

約数の個数: 16

約数和(自身を含む): 2316338208

約数和(自身を除く): 1029917318

約数列:

[1, 2, 5, 10, 3203, 6406, 16015, 32030, 40163, 80326, 200815, 401630, 128642089, 257284178, 643210445, 1286420890]

約数ペア:

[(1, 1286420890), (2, 643210445), (5, 257284178), (10, 128642089), (3203, 401630), (6406, 200815), (16015, 80326), (32030, 40163)]