256967680

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1619}}^1$

素因数の和:1675

約数の個数: 88

約数和(自身を含む): 636698880

約数和(自身を除く): 379731200

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, 512, 620, 640, 992, 1024, 1240, 1280, 1619, 1984, 2480, 2560, 3238, 3968, 4960, 5120, 6476, 7936, 8095, 9920, 12952, 15872, 16190, 19840, 25904, 31744, 32380, 39680, 50189, 51808, 64760, 79360, 100378, 103616, 129520, 158720, 200756, 207232, 250945, 259040, 401512, 414464, 501890, 518080, 803024, 828928, 1003780, 1036160, 1606048, 1657856, 2007560, 2072320, 3212096, 4015120, 4144640, 6424192, 8030240, 8289280, 12848384, 16060480, 25696768, 32120960, 51393536, 64241920, 128483840, 256967680]

約数ペア:

[(1, 256967680), (2, 128483840), (4, 64241920), (5, 51393536), (8, 32120960), (10, 25696768), (16, 16060480), (20, 12848384), (31, 8289280), (32, 8030240), (40, 6424192), (62, 4144640), (64, 4015120), (80, 3212096), (124, 2072320), (128, 2007560), (155, 1657856), (160, 1606048), (248, 1036160), (256, 1003780), (310, 828928), (320, 803024), (496, 518080), (512, 501890), (620, 414464), (640, 401512), (992, 259040), (1024, 250945), (1240, 207232), (1280, 200756), (1619, 158720), (1984, 129520), (2480, 103616), (2560, 100378), (3238, 79360), (3968, 64760), (4960, 51808), (5120, 50189), (6476, 39680), (7936, 32380), (8095, 31744), (9920, 25904), (12952, 19840), (15872, 16190)]