657239680

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{211}}^1$

素因数の和:418

約数の個数: 128

約数和(自身を含む): 1639964160

約数和(自身を除く): 982724480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 157, 160, 211, 248, 310, 314, 320, 422, 496, 620, 628, 640, 785, 844, 992, 1055, 1240, 1256, 1570, 1688, 1984, 2110, 2480, 2512, 3140, 3376, 3968, 4220, 4867, 4960, 5024, 6280, 6541, 6752, 8440, 9734, 9920, 10048, 12560, 13082, 13504, 16880, 19468, 19840, 20096, 24335, 25120, 26164, 27008, 32705, 33127, 33760, 38936, 48670, 50240, 52328, 65410, 66254, 67520, 77872, 97340, 100480, 104656, 130820, 132508, 135040, 155744, 165635, 194680, 209312, 261640, 265016, 311488, 331270, 389360, 418624, 523280, 530032, 622976, 662540, 778720, 837248, 1026937, 1046560, 1060064, 1325080, 1557440, 2053874, 2093120, 2120128, 2650160, 3114880, 4107748, 4186240, 4240256, 5134685, 5300320, 8215496, 10269370, 10600640, 16430992, 20538740, 21201280, 32861984, 41077480, 65723968, 82154960, 131447936, 164309920, 328619840, 657239680]

約数ペア:

[(1, 657239680), (2, 328619840), (4, 164309920), (5, 131447936), (8, 82154960), (10, 65723968), (16, 41077480), (20, 32861984), (31, 21201280), (32, 20538740), (40, 16430992), (62, 10600640), (64, 10269370), (80, 8215496), (124, 5300320), (128, 5134685), (155, 4240256), (157, 4186240), (160, 4107748), (211, 3114880), (248, 2650160), (310, 2120128), (314, 2093120), (320, 2053874), (422, 1557440), (496, 1325080), (620, 1060064), (628, 1046560), (640, 1026937), (785, 837248), (844, 778720), (992, 662540), (1055, 622976), (1240, 530032), (1256, 523280), (1570, 418624), (1688, 389360), (1984, 331270), (2110, 311488), (2480, 265016), (2512, 261640), (3140, 209312), (3376, 194680), (3968, 165635), (4220, 155744), (4867, 135040), (4960, 132508), (5024, 130820), (6280, 104656), (6541, 100480), (6752, 97340), (8440, 77872), (9734, 67520), (9920, 66254), (10048, 65410), (12560, 52328), (13082, 50240), (13504, 48670), (16880, 38936), (19468, 33760), (19840, 33127), (20096, 32705), (24335, 27008), (25120, 26164)]