12880970

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:490

約数の個数: 32

約数和(自身を含む): 24086160

約数和(自身を除く): 11205190

約数列:

[1, 2, 5, 10, 41, 82, 89, 178, 205, 353, 410, 445, 706, 890, 1765, 3530, 3649, 7298, 14473, 18245, 28946, 31417, 36490, 62834, 72365, 144730, 157085, 314170, 1288097, 2576194, 6440485, 12880970]

約数ペア:

[(1, 12880970), (2, 6440485), (5, 2576194), (10, 1288097), (41, 314170), (82, 157085), (89, 144730), (178, 72365), (205, 62834), (353, 36490), (410, 31417), (445, 28946), (706, 18245), (890, 14473), (1765, 7298), (3530, 3649)]