1645648640

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{619}}^1$

素因数の和:738

約数の個数: 144

約数和(自身を含む): 4136401920

約数和(自身を除く): 2490753280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 67, 80, 124, 128, 134, 155, 160, 248, 256, 268, 310, 320, 335, 496, 536, 619, 620, 640, 670, 992, 1072, 1238, 1240, 1280, 1340, 1984, 2077, 2144, 2476, 2480, 2680, 3095, 3968, 4154, 4288, 4952, 4960, 5360, 6190, 7936, 8308, 8576, 9904, 9920, 10385, 10720, 12380, 16616, 17152, 19189, 19808, 19840, 20770, 21440, 24760, 33232, 38378, 39616, 39680, 41473, 41540, 42880, 49520, 66464, 76756, 79232, 82946, 83080, 85760, 95945, 99040, 132928, 153512, 158464, 165892, 166160, 191890, 198080, 207365, 265856, 307024, 331784, 332320, 383780, 396160, 414730, 531712, 614048, 663568, 664640, 767560, 792320, 829460, 1228096, 1285663, 1327136, 1329280, 1535120, 1658920, 2456192, 2571326, 2654272, 2658560, 3070240, 3317840, 4912384, 5142652, 5308544, 6140480, 6428315, 6635680, 10285304, 10617088, 12280960, 12856630, 13271360, 20570608, 24561920, 25713260, 26542720, 41141216, 51426520, 53085440, 82282432, 102853040, 164564864, 205706080, 329129728, 411412160, 822824320, 1645648640]

約数ペア:

[(1, 1645648640), (2, 822824320), (4, 411412160), (5, 329129728), (8, 205706080), (10, 164564864), (16, 102853040), (20, 82282432), (31, 53085440), (32, 51426520), (40, 41141216), (62, 26542720), (64, 25713260), (67, 24561920), (80, 20570608), (124, 13271360), (128, 12856630), (134, 12280960), (155, 10617088), (160, 10285304), (248, 6635680), (256, 6428315), (268, 6140480), (310, 5308544), (320, 5142652), (335, 4912384), (496, 3317840), (536, 3070240), (619, 2658560), (620, 2654272), (640, 2571326), (670, 2456192), (992, 1658920), (1072, 1535120), (1238, 1329280), (1240, 1327136), (1280, 1285663), (1340, 1228096), (1984, 829460), (2077, 792320), (2144, 767560), (2476, 664640), (2480, 663568), (2680, 614048), (3095, 531712), (3968, 414730), (4154, 396160), (4288, 383780), (4952, 332320), (4960, 331784), (5360, 307024), (6190, 265856), (7936, 207365), (8308, 198080), (8576, 191890), (9904, 166160), (9920, 165892), (10385, 158464), (10720, 153512), (12380, 132928), (16616, 99040), (17152, 95945), (19189, 85760), (19808, 83080), (19840, 82946), (20770, 79232), (21440, 76756), (24760, 66464), (33232, 49520), (38378, 42880), (39616, 41540), (39680, 41473)]