256077440

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{21059}}^1$

素因数の和:21097

約数の個数: 64

約数和(自身を含む): 644436000

約数和(自身を除く): 388358560

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 304, 320, 380, 608, 640, 760, 1216, 1520, 2432, 3040, 6080, 12160, 21059, 42118, 84236, 105295, 168472, 210590, 336944, 400121, 421180, 673888, 800242, 842360, 1347776, 1600484, 1684720, 2000605, 2695552, 3200968, 3369440, 4001210, 6401936, 6738880, 8002420, 12803872, 13477760, 16004840, 25607744, 32009680, 51215488, 64019360, 128038720, 256077440]

約数ペア:

[(1, 256077440), (2, 128038720), (4, 64019360), (5, 51215488), (8, 32009680), (10, 25607744), (16, 16004840), (19, 13477760), (20, 12803872), (32, 8002420), (38, 6738880), (40, 6401936), (64, 4001210), (76, 3369440), (80, 3200968), (95, 2695552), (128, 2000605), (152, 1684720), (160, 1600484), (190, 1347776), (304, 842360), (320, 800242), (380, 673888), (608, 421180), (640, 400121), (760, 336944), (1216, 210590), (1520, 168472), (2432, 105295), (3040, 84236), (6080, 42118), (12160, 21059)]