19688560

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12953}}^1$

素因数の和:12985

約数の個数: 40

約数和(自身を含む): 48188880

約数和(自身を除く): 28500320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12953, 25906, 51812, 64765, 103624, 129530, 207248, 246107, 259060, 492214, 518120, 984428, 1036240, 1230535, 1968856, 2461070, 3937712, 4922140, 9844280, 19688560]

約数ペア:

[(1, 19688560), (2, 9844280), (4, 4922140), (5, 3937712), (8, 2461070), (10, 1968856), (16, 1230535), (19, 1036240), (20, 984428), (38, 518120), (40, 492214), (76, 259060), (80, 246107), (95, 207248), (152, 129530), (190, 103624), (304, 64765), (380, 51812), (760, 25906), (1520, 12953)]