65646920

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{11807}}^1$

素因数の和:11957

約数の個数: 32

約数和(自身を含む): 148780800

約数和(自身を除く): 83133880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 11807, 23614, 47228, 59035, 94456, 118070, 236140, 472280, 1641173, 3282346, 6564692, 8205865, 13129384, 16411730, 32823460, 65646920]

約数ペア:

[(1, 65646920), (2, 32823460), (4, 16411730), (5, 13129384), (8, 8205865), (10, 6564692), (20, 3282346), (40, 1641173), (139, 472280), (278, 236140), (556, 118070), (695, 94456), (1112, 59035), (1390, 47228), (2780, 23614), (5560, 11807)]