21000894988

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{1103}}^1\times {\mathrm{1327}}^1$

素因数の和:2662

約数の個数: 48

約数和(自身を含む): 39162783744

約数和(自身を除く): 18161888756

約数列:

[1, 2, 4, 17, 34, 68, 211, 422, 844, 1103, 1327, 2206, 2654, 3587, 4412, 5308, 7174, 14348, 18751, 22559, 37502, 45118, 75004, 90236, 232733, 279997, 465466, 559994, 930932, 1119988, 1463681, 2927362, 3956461, 4759949, 5854724, 7912922, 9519898, 15825844, 19039796, 24882577, 49765154, 99530308, 308836691, 617673382, 1235346764, 5250223747, 10500447494, 21000894988]

約数ペア:

[(1, 21000894988), (2, 10500447494), (4, 5250223747), (17, 1235346764), (34, 617673382), (68, 308836691), (211, 99530308), (422, 49765154), (844, 24882577), (1103, 19039796), (1327, 15825844), (2206, 9519898), (2654, 7912922), (3587, 5854724), (4412, 4759949), (5308, 3956461), (7174, 2927362), (14348, 1463681), (18751, 1119988), (22559, 930932), (37502, 559994), (45118, 465466), (75004, 279997), (90236, 232733)]