64140640

素因数分解:

$2^5\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1289}}^1$

素因数の和:1615

約数の個数: 48

約数和(自身を含む): 152137440

約数和(自身を除く): 87996800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 311, 622, 1244, 1289, 1555, 2488, 2578, 3110, 4976, 5156, 6220, 6445, 9952, 10312, 12440, 12890, 20624, 24880, 25780, 41248, 49760, 51560, 103120, 206240, 400879, 801758, 1603516, 2004395, 3207032, 4008790, 6414064, 8017580, 12828128, 16035160, 32070320, 64140640]

約数ペア:

[(1, 64140640), (2, 32070320), (4, 16035160), (5, 12828128), (8, 8017580), (10, 6414064), (16, 4008790), (20, 3207032), (32, 2004395), (40, 1603516), (80, 801758), (160, 400879), (311, 206240), (622, 103120), (1244, 51560), (1289, 49760), (1555, 41248), (2488, 25780), (2578, 24880), (3110, 20624), (4976, 12890), (5156, 12440), (6220, 10312), (6445, 9952)]