21242019981

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{12613}}^1$

素因数の和:12866

約数の個数: 64

約数和(自身を含む): 36166860800

約数和(自身を除く): 14924840819

約数列:

[1, 3, 7, 13, 21, 31, 39, 91, 93, 199, 217, 273, 403, 597, 651, 1209, 1393, 2587, 2821, 4179, 6169, 7761, 8463, 12613, 18109, 18507, 37839, 43183, 54327, 80197, 88291, 129549, 163969, 240591, 264873, 391003, 491907, 561379, 1147783, 1173009, 1684137, 2509987, 2737021, 3443349, 5083039, 7529961, 8211063, 15249117, 17569909, 32629831, 35581273, 52709727, 77809597, 97889493, 106743819, 228408817, 233428791, 544667179, 685226451, 1011524761, 1634001537, 3034574283, 7080673327, 21242019981]

約数ペア:

[(1, 21242019981), (3, 7080673327), (7, 3034574283), (13, 1634001537), (21, 1011524761), (31, 685226451), (39, 544667179), (91, 233428791), (93, 228408817), (199, 106743819), (217, 97889493), (273, 77809597), (403, 52709727), (597, 35581273), (651, 32629831), (1209, 17569909), (1393, 15249117), (2587, 8211063), (2821, 7529961), (4179, 5083039), (6169, 3443349), (7761, 2737021), (8463, 2509987), (12613, 1684137), (18109, 1173009), (18507, 1147783), (37839, 561379), (43183, 491907), (54327, 391003), (80197, 264873), (88291, 240591), (129549, 163969)]