21025914

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{397}}^1$

素因数の和:519

約数の個数: 64

約数和(自身を含む): 52421376

約数和(自身を除く): 31395462

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 97, 182, 194, 273, 291, 397, 546, 582, 679, 794, 1191, 1261, 1358, 2037, 2382, 2522, 2779, 3783, 4074, 5161, 5558, 7566, 8337, 8827, 10322, 15483, 16674, 17654, 26481, 30966, 36127, 38509, 52962, 72254, 77018, 108381, 115527, 216762, 231054, 269563, 500617, 539126, 808689, 1001234, 1501851, 1617378, 3003702, 3504319, 7008638, 10512957, 21025914]

約数ペア:

[(1, 21025914), (2, 10512957), (3, 7008638), (6, 3504319), (7, 3003702), (13, 1617378), (14, 1501851), (21, 1001234), (26, 808689), (39, 539126), (42, 500617), (78, 269563), (91, 231054), (97, 216762), (182, 115527), (194, 108381), (273, 77018), (291, 72254), (397, 52962), (546, 38509), (582, 36127), (679, 30966), (794, 26481), (1191, 17654), (1261, 16674), (1358, 15483), (2037, 10322), (2382, 8827), (2522, 8337), (2779, 7566), (3783, 5558), (4074, 5161)]