18199900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{193}}^1$

素因数の和:271

約数の個数: 72

約数和(自身を含む): 42434784

約数和(自身を除く): 24234884

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 41, 46, 50, 82, 92, 100, 115, 164, 193, 205, 230, 386, 410, 460, 575, 772, 820, 943, 965, 1025, 1150, 1886, 1930, 2050, 2300, 3772, 3860, 4100, 4439, 4715, 4825, 7913, 8878, 9430, 9650, 15826, 17756, 18860, 19300, 22195, 23575, 31652, 39565, 44390, 47150, 79130, 88780, 94300, 110975, 158260, 181999, 197825, 221950, 363998, 395650, 443900, 727996, 791300, 909995, 1819990, 3639980, 4549975, 9099950, 18199900]

約数ペア:

[(1, 18199900), (2, 9099950), (4, 4549975), (5, 3639980), (10, 1819990), (20, 909995), (23, 791300), (25, 727996), (41, 443900), (46, 395650), (50, 363998), (82, 221950), (92, 197825), (100, 181999), (115, 158260), (164, 110975), (193, 94300), (205, 88780), (230, 79130), (386, 47150), (410, 44390), (460, 39565), (575, 31652), (772, 23575), (820, 22195), (943, 19300), (965, 18860), (1025, 17756), (1150, 15826), (1886, 9650), (1930, 9430), (2050, 8878), (2300, 7913), (3772, 4825), (3860, 4715), (4100, 4439)]