280756980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{222823}}^1$

素因数の和:222845

約数の個数: 72

約数和(自身を含む): 973295232

約数和(自身を除く): 692538252

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 222823, 445646, 668469, 891292, 1114115, 1336938, 1559761, 2005407, 2228230, 2673876, 3119522, 3342345, 4010814, 4456460, 4679283, 6239044, 6684690, 7798805, 8021628, 9358566, 10027035, 13369380, 14037849, 15597610, 18717132, 20054070, 23396415, 28075698, 31195220, 40108140, 46792830, 56151396, 70189245, 93585660, 140378490, 280756980]

約数ペア:

[(1, 280756980), (2, 140378490), (3, 93585660), (4, 70189245), (5, 56151396), (6, 46792830), (7, 40108140), (9, 31195220), (10, 28075698), (12, 23396415), (14, 20054070), (15, 18717132), (18, 15597610), (20, 14037849), (21, 13369380), (28, 10027035), (30, 9358566), (35, 8021628), (36, 7798805), (42, 6684690), (45, 6239044), (60, 4679283), (63, 4456460), (70, 4010814), (84, 3342345), (90, 3119522), (105, 2673876), (126, 2228230), (140, 2005407), (180, 1559761), (210, 1336938), (252, 1114115), (315, 891292), (420, 668469), (630, 445646), (1260, 222823)]