199772020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{8863}}^1$

素因数の和:8909

約数の個数: 72

約数和(自身を含む): 509289984

約数和(自身を除く): 309517964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 805, 980, 1127, 1610, 2254, 3220, 4508, 5635, 8863, 11270, 17726, 22540, 35452, 44315, 62041, 88630, 124082, 177260, 203849, 248164, 310205, 407698, 434287, 620410, 815396, 868574, 1019245, 1240820, 1426943, 1737148, 2038490, 2171435, 2853886, 4076980, 4342870, 5707772, 7134715, 8685740, 9988601, 14269430, 19977202, 28538860, 39954404, 49943005, 99886010, 199772020]

約数ペア:

[(1, 199772020), (2, 99886010), (4, 49943005), (5, 39954404), (7, 28538860), (10, 19977202), (14, 14269430), (20, 9988601), (23, 8685740), (28, 7134715), (35, 5707772), (46, 4342870), (49, 4076980), (70, 2853886), (92, 2171435), (98, 2038490), (115, 1737148), (140, 1426943), (161, 1240820), (196, 1019245), (230, 868574), (245, 815396), (322, 620410), (460, 434287), (490, 407698), (644, 310205), (805, 248164), (980, 203849), (1127, 177260), (1610, 124082), (2254, 88630), (3220, 62041), (4508, 44315), (5635, 35452), (8863, 22540), (11270, 17726)]