218131004

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1487}}^1$

素因数の和:1555

約数の個数: 72

約数和(自身を含む): 487968768

約数和(自身を除く): 269837764

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 52, 62, 91, 124, 169, 182, 217, 338, 364, 403, 434, 676, 806, 868, 1183, 1487, 1612, 2366, 2821, 2974, 4732, 5239, 5642, 5948, 10409, 10478, 11284, 19331, 20818, 20956, 36673, 38662, 41636, 46097, 73346, 77324, 92194, 135317, 146692, 184388, 251303, 270634, 322679, 502606, 541268, 599261, 645358, 1005212, 1198522, 1290716, 1759121, 2397044, 3518242, 4194827, 7036484, 7790393, 8389654, 15580786, 16779308, 31161572, 54532751, 109065502, 218131004]

約数ペア:

[(1, 218131004), (2, 109065502), (4, 54532751), (7, 31161572), (13, 16779308), (14, 15580786), (26, 8389654), (28, 7790393), (31, 7036484), (52, 4194827), (62, 3518242), (91, 2397044), (124, 1759121), (169, 1290716), (182, 1198522), (217, 1005212), (338, 645358), (364, 599261), (403, 541268), (434, 502606), (676, 322679), (806, 270634), (868, 251303), (1183, 184388), (1487, 146692), (1612, 135317), (2366, 92194), (2821, 77324), (2974, 73346), (4732, 46097), (5239, 41636), (5642, 38662), (5948, 36673), (10409, 20956), (10478, 20818), (11284, 19331)]