128881400

素因数分解:

$2^3\times 5^2\times {\mathrm{401}}^1\times {\mathrm{1607}}^1$

素因数の和:2024

約数の個数: 48

約数和(自身を含む): 300583440

約数和(自身を除く): 171702040

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 401, 802, 1604, 1607, 2005, 3208, 3214, 4010, 6428, 8020, 8035, 10025, 12856, 16040, 16070, 20050, 32140, 40100, 40175, 64280, 80200, 80350, 160700, 321400, 644407, 1288814, 2577628, 3222035, 5155256, 6444070, 12888140, 16110175, 25776280, 32220350, 64440700, 128881400]

約数ペア:

[(1, 128881400), (2, 64440700), (4, 32220350), (5, 25776280), (8, 16110175), (10, 12888140), (20, 6444070), (25, 5155256), (40, 3222035), (50, 2577628), (100, 1288814), (200, 644407), (401, 321400), (802, 160700), (1604, 80350), (1607, 80200), (2005, 64280), (3208, 40175), (3214, 40100), (4010, 32140), (6428, 20050), (8020, 16070), (8035, 16040), (10025, 12856)]