64388260

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{19751}}^1$

素因数の和:19923

約数の個数: 24

約数和(自身を含む): 136051776

約数和(自身を除く): 71663516

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 19751, 39502, 79004, 98755, 197510, 395020, 3219413, 6438826, 12877652, 16097065, 32194130, 64388260]

約数ペア:

[(1, 64388260), (2, 32194130), (4, 16097065), (5, 12877652), (10, 6438826), (20, 3219413), (163, 395020), (326, 197510), (652, 98755), (815, 79004), (1630, 39502), (3260, 19751)]