21311800

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1$

素因数の和:193

約数の個数: 96

約数和(自身を含む): 53434080

約数和(自身を除く): 32122280

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 41, 46, 50, 82, 92, 100, 113, 115, 164, 184, 200, 205, 226, 230, 328, 410, 452, 460, 565, 575, 820, 904, 920, 943, 1025, 1130, 1150, 1640, 1886, 2050, 2260, 2300, 2599, 2825, 3772, 4100, 4520, 4600, 4633, 4715, 5198, 5650, 7544, 8200, 9266, 9430, 10396, 11300, 12995, 18532, 18860, 20792, 22600, 23165, 23575, 25990, 37064, 37720, 46330, 47150, 51980, 64975, 92660, 94300, 103960, 106559, 115825, 129950, 185320, 188600, 213118, 231650, 259900, 426236, 463300, 519800, 532795, 852472, 926600, 1065590, 2131180, 2663975, 4262360, 5327950, 10655900, 21311800]

約数ペア:

[(1, 21311800), (2, 10655900), (4, 5327950), (5, 4262360), (8, 2663975), (10, 2131180), (20, 1065590), (23, 926600), (25, 852472), (40, 532795), (41, 519800), (46, 463300), (50, 426236), (82, 259900), (92, 231650), (100, 213118), (113, 188600), (115, 185320), (164, 129950), (184, 115825), (200, 106559), (205, 103960), (226, 94300), (230, 92660), (328, 64975), (410, 51980), (452, 47150), (460, 46330), (565, 37720), (575, 37064), (820, 25990), (904, 23575), (920, 23165), (943, 22600), (1025, 20792), (1130, 18860), (1150, 18532), (1640, 12995), (1886, 11300), (2050, 10396), (2260, 9430), (2300, 9266), (2599, 8200), (2825, 7544), (3772, 5650), (4100, 5198), (4520, 4715), (4600, 4633)]