280861490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{308639}}^1$

素因数の和:308666

約数の個数: 32

約数和(自身を含む): 622218240

約数和(自身を除く): 341356750

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 308639, 617278, 1543195, 2160473, 3086390, 4012307, 4320946, 8024614, 10802365, 20061535, 21604730, 28086149, 40123070, 56172298, 140430745, 280861490]

約数ペア:

[(1, 280861490), (2, 140430745), (5, 56172298), (7, 40123070), (10, 28086149), (13, 21604730), (14, 20061535), (26, 10802365), (35, 8024614), (65, 4320946), (70, 4012307), (91, 3086390), (130, 2160473), (182, 1543195), (455, 617278), (910, 308639)]