21381004960

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{313}}^1\times {\mathrm{8713}}^1$

素因数の和:9055

約数の個数: 144

約数和(自身を含む): 58954079016

約数和(自身を除く): 37573074056

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 313, 392, 490, 560, 626, 784, 980, 1120, 1252, 1565, 1568, 1960, 2191, 2504, 3130, 3920, 4382, 5008, 6260, 7840, 8713, 8764, 10016, 10955, 12520, 15337, 17426, 17528, 21910, 25040, 30674, 34852, 35056, 43565, 43820, 50080, 60991, 61348, 69704, 70112, 76685, 87130, 87640, 121982, 122696, 139408, 153370, 174260, 175280, 243964, 245392, 278816, 304955, 306740, 348520, 350560, 426937, 487928, 490784, 609910, 613480, 697040, 853874, 975856, 1219820, 1226960, 1394080, 1707748, 1951712, 2134685, 2439640, 2453920, 2727169, 3415496, 4269370, 4879280, 5454338, 6830992, 8538740, 9758560, 10908676, 13635845, 13661984, 17077480, 19090183, 21817352, 27271690, 34154960, 38180366, 43634704, 54543380, 68309920, 76360732, 87269408, 95450915, 109086760, 133631281, 152721464, 190901830, 218173520, 267262562, 305442928, 381803660, 436347040, 534525124, 610885856, 668156405, 763607320, 1069050248, 1336312810, 1527214640, 2138100496, 2672625620, 3054429280, 4276200992, 5345251240, 10690502480, 21381004960]

約数ペア:

[(1, 21381004960), (2, 10690502480), (4, 5345251240), (5, 4276200992), (7, 3054429280), (8, 2672625620), (10, 2138100496), (14, 1527214640), (16, 1336312810), (20, 1069050248), (28, 763607320), (32, 668156405), (35, 610885856), (40, 534525124), (49, 436347040), (56, 381803660), (70, 305442928), (80, 267262562), (98, 218173520), (112, 190901830), (140, 152721464), (160, 133631281), (196, 109086760), (224, 95450915), (245, 87269408), (280, 76360732), (313, 68309920), (392, 54543380), (490, 43634704), (560, 38180366), (626, 34154960), (784, 27271690), (980, 21817352), (1120, 19090183), (1252, 17077480), (1565, 13661984), (1568, 13635845), (1960, 10908676), (2191, 9758560), (2504, 8538740), (3130, 6830992), (3920, 5454338), (4382, 4879280), (5008, 4269370), (6260, 3415496), (7840, 2727169), (8713, 2453920), (8764, 2439640), (10016, 2134685), (10955, 1951712), (12520, 1707748), (15337, 1394080), (17426, 1226960), (17528, 1219820), (21910, 975856), (25040, 853874), (30674, 697040), (34852, 613480), (35056, 609910), (43565, 490784), (43820, 487928), (50080, 426937), (60991, 350560), (61348, 348520), (69704, 306740), (70112, 304955), (76685, 278816), (87130, 245392), (87640, 243964), (121982, 175280), (122696, 174260), (139408, 153370)]