64165520

素因数分解:

$2^4\times 5^1\times {\mathrm{311}}^1\times {\mathrm{2579}}^1$

素因数の和:2903

約数の個数: 40

約数和(自身を含む): 149722560

約数和(自身を除く): 85557040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 311, 622, 1244, 1555, 2488, 2579, 3110, 4976, 5158, 6220, 10316, 12440, 12895, 20632, 24880, 25790, 41264, 51580, 103160, 206320, 802069, 1604138, 3208276, 4010345, 6416552, 8020690, 12833104, 16041380, 32082760, 64165520]

約数ペア:

[(1, 64165520), (2, 32082760), (4, 16041380), (5, 12833104), (8, 8020690), (10, 6416552), (16, 4010345), (20, 3208276), (40, 1604138), (80, 802069), (311, 206320), (622, 103160), (1244, 51580), (1555, 41264), (2488, 25790), (2579, 24880), (3110, 20632), (4976, 12895), (5158, 12440), (6220, 10316)]