128999280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{537497}}^1$

素因数の和:537513

約数の個数: 40

約数和(自身を含む): 399898512

約数和(自身を除く): 270899232

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 537497, 1074994, 1612491, 2149988, 2687485, 3224982, 4299976, 5374970, 6449964, 8062455, 8599952, 10749940, 12899928, 16124910, 21499880, 25799856, 32249820, 42999760, 64499640, 128999280]

約数ペア:

[(1, 128999280), (2, 64499640), (3, 42999760), (4, 32249820), (5, 25799856), (6, 21499880), (8, 16124910), (10, 12899928), (12, 10749940), (15, 8599952), (16, 8062455), (20, 6449964), (24, 5374970), (30, 4299976), (40, 3224982), (48, 2687485), (60, 2149988), (80, 1612491), (120, 1074994), (240, 537497)]