21001786904

素因数分解:

$2^3\times 7^2\times {\mathrm{131}}^1\times {\mathrm{241}}^1\times {\mathrm{1697}}^1$

素因数の和:2089

約数の個数: 96

約数和(自身を含む): 46375979760

約数和(自身を除く): 25374192856

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 131, 196, 241, 262, 392, 482, 524, 917, 964, 1048, 1687, 1697, 1834, 1928, 3374, 3394, 3668, 6419, 6748, 6788, 7336, 11809, 11879, 12838, 13496, 13576, 23618, 23758, 25676, 31571, 47236, 47516, 51352, 63142, 83153, 94472, 95032, 126284, 166306, 220997, 222307, 252568, 332612, 408977, 441994, 444614, 665224, 817954, 883988, 889228, 1546979, 1556149, 1635908, 1767976, 1778456, 2862839, 3093958, 3112298, 3271816, 5725678, 6187916, 6224596, 10893043, 11451356, 12375832, 12449192, 20039873, 21786086, 22902712, 40079746, 43572172, 53575987, 80159492, 87144344, 107151974, 160318984, 214303948, 375031909, 428607896, 750063818, 1500127636, 2625223363, 3000255272, 5250446726, 10500893452, 21001786904]

約数ペア:

[(1, 21001786904), (2, 10500893452), (4, 5250446726), (7, 3000255272), (8, 2625223363), (14, 1500127636), (28, 750063818), (49, 428607896), (56, 375031909), (98, 214303948), (131, 160318984), (196, 107151974), (241, 87144344), (262, 80159492), (392, 53575987), (482, 43572172), (524, 40079746), (917, 22902712), (964, 21786086), (1048, 20039873), (1687, 12449192), (1697, 12375832), (1834, 11451356), (1928, 10893043), (3374, 6224596), (3394, 6187916), (3668, 5725678), (6419, 3271816), (6748, 3112298), (6788, 3093958), (7336, 2862839), (11809, 1778456), (11879, 1767976), (12838, 1635908), (13496, 1556149), (13576, 1546979), (23618, 889228), (23758, 883988), (25676, 817954), (31571, 665224), (47236, 444614), (47516, 441994), (51352, 408977), (63142, 332612), (83153, 252568), (94472, 222307), (95032, 220997), (126284, 166306)]