78645760

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1045

約数の個数: 80

約数和(自身を含む): 194844672

約数和(自身を除く): 116198912

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, 991, 992, 1240, 1280, 1982, 1984, 2480, 2560, 3964, 3968, 4955, 4960, 7928, 7936, 9910, 9920, 15856, 15872, 19820, 19840, 30721, 31712, 39640, 39680, 61442, 63424, 79280, 79360, 122884, 126848, 153605, 158560, 245768, 253696, 307210, 317120, 491536, 507392, 614420, 634240, 983072, 1228840, 1268480, 1966144, 2457680, 2536960, 3932288, 4915360, 7864576, 9830720, 15729152, 19661440, 39322880, 78645760]

約数ペア:

[(1, 78645760), (2, 39322880), (4, 19661440), (5, 15729152), (8, 9830720), (10, 7864576), (16, 4915360), (20, 3932288), (31, 2536960), (32, 2457680), (40, 1966144), (62, 1268480), (64, 1228840), (80, 983072), (124, 634240), (128, 614420), (155, 507392), (160, 491536), (248, 317120), (256, 307210), (310, 253696), (320, 245768), (496, 158560), (512, 153605), (620, 126848), (640, 122884), (991, 79360), (992, 79280), (1240, 63424), (1280, 61442), (1982, 39680), (1984, 39640), (2480, 31712), (2560, 30721), (3964, 19840), (3968, 19820), (4955, 15872), (4960, 15856), (7928, 9920), (7936, 9910)]