19786520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2927}}^1$

素因数の和:2964

約数の個数: 48

約数和(自身を含む): 48224160

約数和(自身を除く): 28437640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 2927, 3380, 5854, 6760, 11708, 14635, 23416, 29270, 38051, 58540, 76102, 117080, 152204, 190255, 304408, 380510, 494663, 761020, 989326, 1522040, 1978652, 2473315, 3957304, 4946630, 9893260, 19786520]

約数ペア:

[(1, 19786520), (2, 9893260), (4, 4946630), (5, 3957304), (8, 2473315), (10, 1978652), (13, 1522040), (20, 989326), (26, 761020), (40, 494663), (52, 380510), (65, 304408), (104, 190255), (130, 152204), (169, 117080), (260, 76102), (338, 58540), (520, 38051), (676, 29270), (845, 23416), (1352, 14635), (1690, 11708), (2927, 6760), (3380, 5854)]