19624720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12911}}^1$

素因数の和:12943

約数の個数: 40

約数和(自身を含む): 48032640

約数和(自身を除く): 28407920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12911, 25822, 51644, 64555, 103288, 129110, 206576, 245309, 258220, 490618, 516440, 981236, 1032880, 1226545, 1962472, 2453090, 3924944, 4906180, 9812360, 19624720]

約数ペア:

[(1, 19624720), (2, 9812360), (4, 4906180), (5, 3924944), (8, 2453090), (10, 1962472), (16, 1226545), (19, 1032880), (20, 981236), (38, 516440), (40, 490618), (76, 258220), (80, 245309), (95, 206576), (152, 129110), (190, 103288), (304, 64555), (380, 51644), (760, 25822), (1520, 12911)]