161777980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{863}}^1$

素因数の和:995

約数の個数: 96

約数和(自身を含む): 422682624

約数和(自身を除く): 260904644

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 103, 130, 140, 182, 206, 260, 364, 412, 455, 515, 721, 863, 910, 1030, 1339, 1442, 1726, 1820, 2060, 2678, 2884, 3452, 3605, 4315, 5356, 6041, 6695, 7210, 8630, 9373, 11219, 12082, 13390, 14420, 17260, 18746, 22438, 24164, 26780, 30205, 37492, 44876, 46865, 56095, 60410, 78533, 88889, 93730, 112190, 120820, 157066, 177778, 187460, 224380, 314132, 355556, 392665, 444445, 622223, 785330, 888890, 1155557, 1244446, 1570660, 1777780, 2311114, 2488892, 3111115, 4622228, 5777785, 6222230, 8088899, 11555570, 12444460, 16177798, 23111140, 32355596, 40444495, 80888990, 161777980]

約数ペア:

[(1, 161777980), (2, 80888990), (4, 40444495), (5, 32355596), (7, 23111140), (10, 16177798), (13, 12444460), (14, 11555570), (20, 8088899), (26, 6222230), (28, 5777785), (35, 4622228), (52, 3111115), (65, 2488892), (70, 2311114), (91, 1777780), (103, 1570660), (130, 1244446), (140, 1155557), (182, 888890), (206, 785330), (260, 622223), (364, 444445), (412, 392665), (455, 355556), (515, 314132), (721, 224380), (863, 187460), (910, 177778), (1030, 157066), (1339, 120820), (1442, 112190), (1726, 93730), (1820, 88889), (2060, 78533), (2678, 60410), (2884, 56095), (3452, 46865), (3605, 44876), (4315, 37492), (5356, 30205), (6041, 26780), (6695, 24164), (7210, 22438), (8630, 18746), (9373, 17260), (11219, 14420), (12082, 13390)]