445998800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{431}}^1$

素因数の和:661

約数の個数: 120

約数和(自身を含む): 1162425600

約数和(自身を除く): 716426800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 199, 200, 208, 260, 325, 398, 400, 431, 520, 650, 796, 862, 995, 1040, 1300, 1592, 1724, 1990, 2155, 2587, 2600, 3184, 3448, 3980, 4310, 4975, 5174, 5200, 5603, 6896, 7960, 8620, 9950, 10348, 10775, 11206, 12935, 15920, 17240, 19900, 20696, 21550, 22412, 25870, 28015, 34480, 39800, 41392, 43100, 44824, 51740, 56030, 64675, 79600, 85769, 86200, 89648, 103480, 112060, 129350, 140075, 171538, 172400, 206960, 224120, 258700, 280150, 343076, 428845, 448240, 517400, 560300, 686152, 857690, 1034800, 1114997, 1120600, 1372304, 1715380, 2144225, 2229994, 2241200, 3430760, 4288450, 4459988, 5574985, 6861520, 8576900, 8919976, 11149970, 17153800, 17839952, 22299940, 27874925, 34307600, 44599880, 55749850, 89199760, 111499700, 222999400, 445998800]

約数ペア:

[(1, 445998800), (2, 222999400), (4, 111499700), (5, 89199760), (8, 55749850), (10, 44599880), (13, 34307600), (16, 27874925), (20, 22299940), (25, 17839952), (26, 17153800), (40, 11149970), (50, 8919976), (52, 8576900), (65, 6861520), (80, 5574985), (100, 4459988), (104, 4288450), (130, 3430760), (199, 2241200), (200, 2229994), (208, 2144225), (260, 1715380), (325, 1372304), (398, 1120600), (400, 1114997), (431, 1034800), (520, 857690), (650, 686152), (796, 560300), (862, 517400), (995, 448240), (1040, 428845), (1300, 343076), (1592, 280150), (1724, 258700), (1990, 224120), (2155, 206960), (2587, 172400), (2600, 171538), (3184, 140075), (3448, 129350), (3980, 112060), (4310, 103480), (4975, 89648), (5174, 86200), (5200, 85769), (5603, 79600), (6896, 64675), (7960, 56030), (8620, 51740), (9950, 44824), (10348, 43100), (10775, 41392), (11206, 39800), (12935, 34480), (15920, 28015), (17240, 25870), (19900, 22412), (20696, 21550)]