20789930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{349}}^1$

素因数の和:423

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 25174870

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 37, 46, 70, 74, 115, 161, 185, 230, 259, 322, 349, 370, 518, 698, 805, 851, 1295, 1610, 1702, 1745, 2443, 2590, 3490, 4255, 4886, 5957, 8027, 8510, 11914, 12215, 12913, 16054, 24430, 25826, 29785, 40135, 56189, 59570, 64565, 80270, 90391, 112378, 129130, 180782, 280945, 296999, 451955, 561890, 593998, 903910, 1484995, 2078993, 2969990, 4157986, 10394965, 20789930]

約数ペア:

[(1, 20789930), (2, 10394965), (5, 4157986), (7, 2969990), (10, 2078993), (14, 1484995), (23, 903910), (35, 593998), (37, 561890), (46, 451955), (70, 296999), (74, 280945), (115, 180782), (161, 129130), (185, 112378), (230, 90391), (259, 80270), (322, 64565), (349, 59570), (370, 56189), (518, 40135), (698, 29785), (805, 25826), (851, 24430), (1295, 16054), (1610, 12913), (1702, 12215), (1745, 11914), (2443, 8510), (2590, 8027), (3490, 5957), (4255, 4886)]