255999984

素因数分解:

$2^4\times 3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{4001}}^1$

素因数の和:4086

約数の個数: 80

約数和(自身を含む): 698717184

約数和(自身を除く): 442717200

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 31, 43, 48, 62, 86, 93, 124, 129, 172, 186, 248, 258, 344, 372, 496, 516, 688, 744, 1032, 1333, 1488, 2064, 2666, 3999, 4001, 5332, 7998, 8002, 10664, 12003, 15996, 16004, 21328, 24006, 31992, 32008, 48012, 63984, 64016, 96024, 124031, 172043, 192048, 248062, 344086, 372093, 496124, 516129, 688172, 744186, 992248, 1032258, 1376344, 1488372, 1984496, 2064516, 2752688, 2976744, 4129032, 5333333, 5953488, 8258064, 10666666, 15999999, 21333332, 31999998, 42666664, 63999996, 85333328, 127999992, 255999984]

約数ペア:

[(1, 255999984), (2, 127999992), (3, 85333328), (4, 63999996), (6, 42666664), (8, 31999998), (12, 21333332), (16, 15999999), (24, 10666666), (31, 8258064), (43, 5953488), (48, 5333333), (62, 4129032), (86, 2976744), (93, 2752688), (124, 2064516), (129, 1984496), (172, 1488372), (186, 1376344), (248, 1032258), (258, 992248), (344, 744186), (372, 688172), (496, 516129), (516, 496124), (688, 372093), (744, 344086), (1032, 248062), (1333, 192048), (1488, 172043), (2064, 124031), (2666, 96024), (3999, 64016), (4001, 63984), (5332, 48012), (7998, 32008), (8002, 31992), (10664, 24006), (12003, 21328), (15996, 16004)]