211249780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{1373}}^1$

素因数の和:1553

約数の個数: 72

約数和(自身を含む): 519718248

約数和(自身を除く): 308468468

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 157, 196, 245, 314, 490, 628, 785, 980, 1099, 1373, 1570, 2198, 2746, 3140, 4396, 5492, 5495, 6865, 7693, 9611, 10990, 13730, 15386, 19222, 21980, 27460, 30772, 38444, 38465, 48055, 67277, 76930, 96110, 134554, 153860, 192220, 215561, 269108, 336385, 431122, 672770, 862244, 1077805, 1345540, 1508927, 2155610, 3017854, 4311220, 6035708, 7544635, 10562489, 15089270, 21124978, 30178540, 42249956, 52812445, 105624890, 211249780]

約数ペア:

[(1, 211249780), (2, 105624890), (4, 52812445), (5, 42249956), (7, 30178540), (10, 21124978), (14, 15089270), (20, 10562489), (28, 7544635), (35, 6035708), (49, 4311220), (70, 3017854), (98, 2155610), (140, 1508927), (157, 1345540), (196, 1077805), (245, 862244), (314, 672770), (490, 431122), (628, 336385), (785, 269108), (980, 215561), (1099, 192220), (1373, 153860), (1570, 134554), (2198, 96110), (2746, 76930), (3140, 67277), (4396, 48055), (5492, 38465), (5495, 38444), (6865, 30772), (7693, 27460), (9611, 21980), (10990, 19222), (13730, 15386)]