66823720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{38851}}^1$

素因数の和:38905

約数の個数: 32

約数和(自身を含む): 153853920

約数和(自身を除く): 87030200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 38851, 77702, 155404, 194255, 310808, 388510, 777020, 1554040, 1670593, 3341186, 6682372, 8352965, 13364744, 16705930, 33411860, 66823720]

約数ペア:

[(1, 66823720), (2, 33411860), (4, 16705930), (5, 13364744), (8, 8352965), (10, 6682372), (20, 3341186), (40, 1670593), (43, 1554040), (86, 777020), (172, 388510), (215, 310808), (344, 194255), (430, 155404), (860, 77702), (1720, 38851)]