16956405

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:207

約数の個数: 64

約数和(自身を含む): 32440320

約数和(自身を除く): 15483915

約数列:

[1, 3, 5, 9, 15, 23, 27, 43, 45, 69, 115, 127, 129, 135, 207, 215, 345, 381, 387, 621, 635, 645, 989, 1035, 1143, 1161, 1905, 1935, 2921, 2967, 3105, 3429, 4945, 5461, 5715, 5805, 8763, 8901, 14605, 14835, 16383, 17145, 26289, 26703, 27305, 43815, 44505, 49149, 78867, 81915, 125603, 131445, 133515, 147447, 245745, 376809, 394335, 628015, 737235, 1130427, 1884045, 3391281, 5652135, 16956405]

約数ペア:

[(1, 16956405), (3, 5652135), (5, 3391281), (9, 1884045), (15, 1130427), (23, 737235), (27, 628015), (43, 394335), (45, 376809), (69, 245745), (115, 147447), (127, 133515), (129, 131445), (135, 125603), (207, 81915), (215, 78867), (345, 49149), (381, 44505), (387, 43815), (621, 27305), (635, 26703), (645, 26289), (989, 17145), (1035, 16383), (1143, 14835), (1161, 14605), (1905, 8901), (1935, 8763), (2921, 5805), (2967, 5715), (3105, 5461), (3429, 4945)]