21000751856

素因数分解:

$2^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{56941}}^1$

素因数の和:57082

約数の個数: 80

約数和(自身を含む): 48295926720

約数和(自身を除く): 27295174864

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 56, 74, 89, 112, 148, 178, 259, 296, 356, 518, 592, 623, 712, 1036, 1246, 1424, 2072, 2492, 3293, 4144, 4984, 6586, 9968, 13172, 23051, 26344, 46102, 52688, 56941, 92204, 113882, 184408, 227764, 368816, 398587, 455528, 797174, 911056, 1594348, 2106817, 3188696, 4213634, 5067749, 6377392, 8427268, 10135498, 14747719, 16854536, 20270996, 29495438, 33709072, 35474243, 40541992, 58990876, 70948486, 81083984, 117981752, 141896972, 187506713, 235963504, 283793944, 375013426, 567587888, 750026852, 1312546991, 1500053704, 2625093982, 3000107408, 5250187964, 10500375928, 21000751856]

約数ペア:

[(1, 21000751856), (2, 10500375928), (4, 5250187964), (7, 3000107408), (8, 2625093982), (14, 1500053704), (16, 1312546991), (28, 750026852), (37, 567587888), (56, 375013426), (74, 283793944), (89, 235963504), (112, 187506713), (148, 141896972), (178, 117981752), (259, 81083984), (296, 70948486), (356, 58990876), (518, 40541992), (592, 35474243), (623, 33709072), (712, 29495438), (1036, 20270996), (1246, 16854536), (1424, 14747719), (2072, 10135498), (2492, 8427268), (3293, 6377392), (4144, 5067749), (4984, 4213634), (6586, 3188696), (9968, 2106817), (13172, 1594348), (23051, 911056), (26344, 797174), (46102, 455528), (52688, 398587), (56941, 368816), (92204, 227764), (113882, 184408)]