64241920

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1619}}^1$

素因数の和:1671

約数の個数: 72

約数和(自身を含む): 158941440

約数和(自身を除く): 94699520

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, 1619, 1984, 2480, 3238, 3968, 4960, 6476, 7936, 8095, 9920, 12952, 16190, 19840, 25904, 32380, 39680, 50189, 51808, 64760, 100378, 103616, 129520, 200756, 207232, 250945, 259040, 401512, 414464, 501890, 518080, 803024, 1003780, 1036160, 1606048, 2007560, 2072320, 3212096, 4015120, 6424192, 8030240, 12848384, 16060480, 32120960, 64241920]

約数ペア:

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