7779990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:253

約数の個数: 64

約数和(自身を含む): 19742976

約数和(自身を除く): 11962986

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 37, 43, 74, 86, 111, 129, 163, 185, 215, 222, 258, 326, 370, 430, 489, 555, 645, 815, 978, 1110, 1290, 1591, 1630, 2445, 3182, 4773, 4890, 6031, 7009, 7955, 9546, 12062, 14018, 15910, 18093, 21027, 23865, 30155, 35045, 36186, 42054, 47730, 60310, 70090, 90465, 105135, 180930, 210270, 259333, 518666, 777999, 1296665, 1555998, 2593330, 3889995, 7779990]

約数ペア:

[(1, 7779990), (2, 3889995), (3, 2593330), (5, 1555998), (6, 1296665), (10, 777999), (15, 518666), (30, 259333), (37, 210270), (43, 180930), (74, 105135), (86, 90465), (111, 70090), (129, 60310), (163, 47730), (185, 42054), (215, 36186), (222, 35045), (258, 30155), (326, 23865), (370, 21027), (430, 18093), (489, 15910), (555, 14018), (645, 12062), (815, 9546), (978, 7955), (1110, 7009), (1290, 6031), (1591, 4890), (1630, 4773), (2445, 3182)]