21000879798

素因数分解:

$2^1\times 3^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1\times {\mathrm{3533}}^1$

素因数の和:3857

約数の個数: 64

約数和(自身を含む): 43383384000

約数和(自身を除く): 22382504202

約数列:

[1, 2, 3, 6, 61, 109, 122, 149, 183, 218, 298, 327, 366, 447, 654, 894, 3533, 6649, 7066, 9089, 10599, 13298, 16241, 18178, 19947, 21198, 27267, 32482, 39894, 48723, 54534, 97446, 215513, 385097, 431026, 526417, 646539, 770194, 990701, 1052834, 1155291, 1293078, 1579251, 1981402, 2310582, 2972103, 3158502, 5944206, 23490917, 32111437, 46981834, 57379453, 64222874, 70472751, 96334311, 114758906, 140945502, 172138359, 192668622, 344276718, 3500146633, 7000293266, 10500439899, 21000879798]

約数ペア:

[(1, 21000879798), (2, 10500439899), (3, 7000293266), (6, 3500146633), (61, 344276718), (109, 192668622), (122, 172138359), (149, 140945502), (183, 114758906), (218, 96334311), (298, 70472751), (327, 64222874), (366, 57379453), (447, 46981834), (654, 32111437), (894, 23490917), (3533, 5944206), (6649, 3158502), (7066, 2972103), (9089, 2310582), (10599, 1981402), (13298, 1579251), (16241, 1293078), (18178, 1155291), (19947, 1052834), (21198, 990701), (27267, 770194), (32482, 646539), (39894, 526417), (48723, 431026), (54534, 385097), (97446, 215513)]