21283756

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 41983200

約数和(自身を除く): 20699444

約数列:

[1, 2, 4, 13, 26, 41, 52, 67, 82, 134, 149, 164, 268, 298, 533, 596, 871, 1066, 1742, 1937, 2132, 2747, 3484, 3874, 5494, 6109, 7748, 9983, 10988, 12218, 19966, 24436, 35711, 39932, 71422, 79417, 129779, 142844, 158834, 259558, 317668, 409303, 519116, 818606, 1637212, 5320939, 10641878, 21283756]

約数ペア:

[(1, 21283756), (2, 10641878), (4, 5320939), (13, 1637212), (26, 818606), (41, 519116), (52, 409303), (67, 317668), (82, 259558), (134, 158834), (149, 142844), (164, 129779), (268, 79417), (298, 71422), (533, 39932), (596, 35711), (871, 24436), (1066, 19966), (1742, 12218), (1937, 10988), (2132, 9983), (2747, 7748), (3484, 6109), (3874, 5494)]