278513920

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7019}}^1$

素因数の和:7071

約数の個数: 72

約数和(自身を含む): 688746240

約数和(自身を除く): 410232320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7019, 7936, 9920, 14038, 19840, 28076, 35095, 39680, 56152, 70190, 112304, 140380, 217589, 224608, 280760, 435178, 449216, 561520, 870356, 898432, 1087945, 1123040, 1740712, 1796864, 2175890, 2246080, 3481424, 4351780, 4492160, 6962848, 8703560, 8984320, 13925696, 17407120, 27851392, 34814240, 55702784, 69628480, 139256960, 278513920]

約数ペア:

[(1, 278513920), (2, 139256960), (4, 69628480), (5, 55702784), (8, 34814240), (10, 27851392), (16, 17407120), (20, 13925696), (31, 8984320), (32, 8703560), (40, 6962848), (62, 4492160), (64, 4351780), (80, 3481424), (124, 2246080), (128, 2175890), (155, 1796864), (160, 1740712), (248, 1123040), (256, 1087945), (310, 898432), (320, 870356), (496, 561520), (620, 449216), (640, 435178), (992, 280760), (1240, 224608), (1280, 217589), (1984, 140380), (2480, 112304), (3968, 70190), (4960, 56152), (7019, 39680), (7936, 35095), (9920, 28076), (14038, 19840)]