20881284145

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{661}}^1\times {\mathrm{1741}}^1$

素因数の和:2617

約数の個数: 32

約数和(自身を含む): 26569820160

約数和(自身を除く): 5688536015

約数列:

[1, 5, 19, 95, 191, 661, 955, 1741, 3305, 3629, 8705, 12559, 18145, 33079, 62795, 126251, 165395, 332531, 631255, 1150801, 1662655, 2398769, 5754005, 6318089, 11993845, 21865219, 31590445, 109326095, 219802991, 1099014955, 4176256829, 20881284145]

約数ペア:

[(1, 20881284145), (5, 4176256829), (19, 1099014955), (95, 219802991), (191, 109326095), (661, 31590445), (955, 21865219), (1741, 11993845), (3305, 6318089), (3629, 5754005), (8705, 2398769), (12559, 1662655), (18145, 1150801), (33079, 631255), (62795, 332531), (126251, 165395)]