81601740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41213}}^1$

素因数の和:41239

約数の個数: 72

約数和(自身を含む): 270034128

約数和(自身を除く): 188432388

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 41213, 82426, 123639, 164852, 206065, 247278, 370917, 412130, 453343, 494556, 618195, 741834, 824260, 906686, 1236390, 1360029, 1483668, 1813372, 1854585, 2266715, 2472780, 2720058, 3709170, 4080087, 4533430, 5440116, 6800145, 7418340, 8160174, 9066860, 13600290, 16320348, 20400435, 27200580, 40800870, 81601740]

約数ペア:

[(1, 81601740), (2, 40800870), (3, 27200580), (4, 20400435), (5, 16320348), (6, 13600290), (9, 9066860), (10, 8160174), (11, 7418340), (12, 6800145), (15, 5440116), (18, 4533430), (20, 4080087), (22, 3709170), (30, 2720058), (33, 2472780), (36, 2266715), (44, 1854585), (45, 1813372), (55, 1483668), (60, 1360029), (66, 1236390), (90, 906686), (99, 824260), (110, 741834), (132, 618195), (165, 494556), (180, 453343), (198, 412130), (220, 370917), (330, 247278), (396, 206065), (495, 164852), (660, 123639), (990, 82426), (1980, 41213)]