261464320

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{827}}^1$

素因数の和:880

約数の個数: 144

約数和(自身を含む): 710821440

約数和(自身を除く): 449357120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 64, 65, 76, 80, 95, 104, 128, 130, 152, 160, 190, 208, 247, 256, 260, 304, 320, 380, 416, 494, 520, 608, 640, 760, 827, 832, 988, 1040, 1216, 1235, 1280, 1520, 1654, 1664, 1976, 2080, 2432, 2470, 3040, 3308, 3328, 3952, 4135, 4160, 4864, 4940, 6080, 6616, 7904, 8270, 8320, 9880, 10751, 12160, 13232, 15713, 15808, 16540, 16640, 19760, 21502, 24320, 26464, 31426, 31616, 33080, 39520, 43004, 52928, 53755, 62852, 63232, 66160, 78565, 79040, 86008, 105856, 107510, 125704, 132320, 157130, 158080, 172016, 204269, 211712, 215020, 251408, 264640, 314260, 316160, 344032, 408538, 430040, 502816, 529280, 628520, 688064, 817076, 860080, 1005632, 1021345, 1058560, 1257040, 1376128, 1634152, 1720160, 2011264, 2042690, 2514080, 2752256, 3268304, 3440320, 4022528, 4085380, 5028160, 6536608, 6880640, 8170760, 10056320, 13073216, 13761280, 16341520, 20112640, 26146432, 32683040, 52292864, 65366080, 130732160, 261464320]

約数ペア:

[(1, 261464320), (2, 130732160), (4, 65366080), (5, 52292864), (8, 32683040), (10, 26146432), (13, 20112640), (16, 16341520), (19, 13761280), (20, 13073216), (26, 10056320), (32, 8170760), (38, 6880640), (40, 6536608), (52, 5028160), (64, 4085380), (65, 4022528), (76, 3440320), (80, 3268304), (95, 2752256), (104, 2514080), (128, 2042690), (130, 2011264), (152, 1720160), (160, 1634152), (190, 1376128), (208, 1257040), (247, 1058560), (256, 1021345), (260, 1005632), (304, 860080), (320, 817076), (380, 688064), (416, 628520), (494, 529280), (520, 502816), (608, 430040), (640, 408538), (760, 344032), (827, 316160), (832, 314260), (988, 264640), (1040, 251408), (1216, 215020), (1235, 211712), (1280, 204269), (1520, 172016), (1654, 158080), (1664, 157130), (1976, 132320), (2080, 125704), (2432, 107510), (2470, 105856), (3040, 86008), (3308, 79040), (3328, 78565), (3952, 66160), (4135, 63232), (4160, 62852), (4864, 53755), (4940, 52928), (6080, 43004), (6616, 39520), (7904, 33080), (8270, 31616), (8320, 31426), (9880, 26464), (10751, 24320), (12160, 21502), (13232, 19760), (15713, 16640), (15808, 16540)]