21203468

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1951}}^1$

素因数の和:1998

約数の個数: 48

約数和(自身を含む): 45911040

約数和(自身を除く): 24707572

約数列:

[1, 2, 4, 11, 13, 19, 22, 26, 38, 44, 52, 76, 143, 209, 247, 286, 418, 494, 572, 836, 988, 1951, 2717, 3902, 5434, 7804, 10868, 21461, 25363, 37069, 42922, 50726, 74138, 85844, 101452, 148276, 278993, 407759, 481897, 557986, 815518, 963794, 1115972, 1631036, 1927588, 5300867, 10601734, 21203468]

約数ペア:

[(1, 21203468), (2, 10601734), (4, 5300867), (11, 1927588), (13, 1631036), (19, 1115972), (22, 963794), (26, 815518), (38, 557986), (44, 481897), (52, 407759), (76, 278993), (143, 148276), (209, 101452), (247, 85844), (286, 74138), (418, 50726), (494, 42922), (572, 37069), (836, 25363), (988, 21461), (1951, 10868), (2717, 7804), (3902, 5434)]