405496980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{321823}}^1$

素因数の和:321845

約数の個数: 72

約数和(自身を含む): 1405727232

約数和(自身を除く): 1000230252

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, 321823, 643646, 965469, 1287292, 1609115, 1930938, 2252761, 2896407, 3218230, 3861876, 4505522, 4827345, 5792814, 6436460, 6758283, 9011044, 9654690, 11263805, 11585628, 13516566, 14482035, 19309380, 20274849, 22527610, 27033132, 28964070, 33791415, 40549698, 45055220, 57928140, 67582830, 81099396, 101374245, 135165660, 202748490, 405496980]

約数ペア:

[(1, 405496980), (2, 202748490), (3, 135165660), (4, 101374245), (5, 81099396), (6, 67582830), (7, 57928140), (9, 45055220), (10, 40549698), (12, 33791415), (14, 28964070), (15, 27033132), (18, 22527610), (20, 20274849), (21, 19309380), (28, 14482035), (30, 13516566), (35, 11585628), (36, 11263805), (42, 9654690), (45, 9011044), (60, 6758283), (63, 6436460), (70, 5792814), (84, 4827345), (90, 4505522), (105, 3861876), (126, 3218230), (140, 2896407), (180, 2252761), (210, 1930938), (252, 1609115), (315, 1287292), (420, 965469), (630, 643646), (1260, 321823)]