20161556181

素因数分解:

$3^5\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{28879}}^1$

素因数の和:28937

約数の個数: 72

約数和(自身を含む): 34627582080

約数和(自身を除く): 14466025899

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 81, 117, 153, 169, 221, 243, 351, 459, 507, 663, 1053, 1377, 1521, 1989, 2873, 3159, 4131, 4563, 5967, 8619, 13689, 17901, 25857, 28879, 41067, 53703, 77571, 86637, 232713, 259911, 375427, 490943, 698139, 779733, 1126281, 1472829, 2339199, 3378843, 4418487, 4880551, 6382259, 7017597, 10136529, 13255461, 14641653, 19146777, 30409587, 39766383, 43924959, 57440331, 82969367, 91228761, 119299149, 131774877, 172320993, 248908101, 395324631, 516962979, 746724303, 1185973893, 1550888937, 2240172909, 6720518727, 20161556181]

約数ペア:

[(1, 20161556181), (3, 6720518727), (9, 2240172909), (13, 1550888937), (17, 1185973893), (27, 746724303), (39, 516962979), (51, 395324631), (81, 248908101), (117, 172320993), (153, 131774877), (169, 119299149), (221, 91228761), (243, 82969367), (351, 57440331), (459, 43924959), (507, 39766383), (663, 30409587), (1053, 19146777), (1377, 14641653), (1521, 13255461), (1989, 10136529), (2873, 7017597), (3159, 6382259), (4131, 4880551), (4563, 4418487), (5967, 3378843), (8619, 2339199), (13689, 1472829), (17901, 1126281), (25857, 779733), (28879, 698139), (41067, 490943), (53703, 375427), (77571, 259911), (86637, 232713)]