77931520

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{491}}^1$

素因数の和:547

約数の個数: 88

約数和(自身を含む): 193367808

約数和(自身を除く): 115436288

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, 491, 496, 512, 620, 640, 982, 992, 1024, 1240, 1280, 1964, 1984, 2455, 2480, 2560, 3928, 3968, 4910, 4960, 5120, 7856, 7936, 9820, 9920, 15221, 15712, 15872, 19640, 19840, 30442, 31424, 31744, 39280, 39680, 60884, 62848, 76105, 78560, 79360, 121768, 125696, 152210, 157120, 158720, 243536, 251392, 304420, 314240, 487072, 502784, 608840, 628480, 974144, 1217680, 1256960, 1948288, 2435360, 2513920, 3896576, 4870720, 7793152, 9741440, 15586304, 19482880, 38965760, 77931520]

約数ペア:

[(1, 77931520), (2, 38965760), (4, 19482880), (5, 15586304), (8, 9741440), (10, 7793152), (16, 4870720), (20, 3896576), (31, 2513920), (32, 2435360), (40, 1948288), (62, 1256960), (64, 1217680), (80, 974144), (124, 628480), (128, 608840), (155, 502784), (160, 487072), (248, 314240), (256, 304420), (310, 251392), (320, 243536), (491, 158720), (496, 157120), (512, 152210), (620, 125696), (640, 121768), (982, 79360), (992, 78560), (1024, 76105), (1240, 62848), (1280, 60884), (1964, 39680), (1984, 39280), (2455, 31744), (2480, 31424), (2560, 30442), (3928, 19840), (3968, 19640), (4910, 15872), (4960, 15712), (5120, 15221), (7856, 9920), (7936, 9820)]