81649645

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:226

約数の個数: 64

約数和(自身を含む): 129392640

約数和(自身を除く): 47742995

約数列:

[1, 5, 7, 11, 29, 35, 55, 71, 77, 103, 145, 203, 319, 355, 385, 497, 515, 721, 781, 1015, 1133, 1595, 2059, 2233, 2485, 2987, 3605, 3905, 5467, 5665, 7313, 7931, 10295, 11165, 14413, 14935, 20909, 22649, 27335, 32857, 36565, 39655, 51191, 72065, 80443, 104545, 113245, 158543, 164285, 212077, 229999, 255955, 402215, 563101, 792715, 1060385, 1149995, 1484539, 2332847, 2815505, 7422695, 11664235, 16329929, 81649645]

約数ペア:

[(1, 81649645), (5, 16329929), (7, 11664235), (11, 7422695), (29, 2815505), (35, 2332847), (55, 1484539), (71, 1149995), (77, 1060385), (103, 792715), (145, 563101), (203, 402215), (319, 255955), (355, 229999), (385, 212077), (497, 164285), (515, 158543), (721, 113245), (781, 104545), (1015, 80443), (1133, 72065), (1595, 51191), (2059, 39655), (2233, 36565), (2485, 32857), (2987, 27335), (3605, 22649), (3905, 20909), (5467, 14935), (5665, 14413), (7313, 11165), (7931, 10295)]