1999996838440

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^2\times {\mathrm{1697}}^1\times {\mathrm{55697}}^1$

素因数の和:57451

約数の個数: 96

約数和(自身を含む): 4707007903080

約数和(自身を除く): 2707011064640

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 529, 920, 1058, 1697, 2116, 2645, 3394, 4232, 5290, 6788, 8485, 10580, 13576, 16970, 21160, 33940, 39031, 55697, 67880, 78062, 111394, 156124, 195155, 222788, 278485, 312248, 390310, 445576, 556970, 780620, 897713, 1113940, 1281031, 1561240, 1795426, 2227880, 2562062, 3590852, 4488565, 5124124, 6405155, 7181704, 8977130, 10248248, 12810310, 17954260, 25620620, 29463713, 35908520, 51241240, 58927426, 94517809, 117854852, 147318565, 189035618, 235709704, 294637130, 378071236, 472589045, 589274260, 756142472, 945178090, 1178548520, 1890356180, 2173909607, 3780712360, 4347819214, 8695638428, 10869548035, 17391276856, 21739096070, 43478192140, 49999920961, 86956384280, 99999841922, 199999683844, 249999604805, 399999367688, 499999209610, 999998419220, 1999996838440]

約数ペア:

[(1, 1999996838440), (2, 999998419220), (4, 499999209610), (5, 399999367688), (8, 249999604805), (10, 199999683844), (20, 99999841922), (23, 86956384280), (40, 49999920961), (46, 43478192140), (92, 21739096070), (115, 17391276856), (184, 10869548035), (230, 8695638428), (460, 4347819214), (529, 3780712360), (920, 2173909607), (1058, 1890356180), (1697, 1178548520), (2116, 945178090), (2645, 756142472), (3394, 589274260), (4232, 472589045), (5290, 378071236), (6788, 294637130), (8485, 235709704), (10580, 189035618), (13576, 147318565), (16970, 117854852), (21160, 94517809), (33940, 58927426), (39031, 51241240), (55697, 35908520), (67880, 29463713), (78062, 25620620), (111394, 17954260), (156124, 12810310), (195155, 10248248), (222788, 8977130), (278485, 7181704), (312248, 6405155), (390310, 5124124), (445576, 4488565), (556970, 3590852), (780620, 2562062), (897713, 2227880), (1113940, 1795426), (1281031, 1561240)]