280419800

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^2\times {\mathrm{1459}}^1$

素因数の和:1537

約数の個数: 72

約数和(自身を含む): 674147700

約数和(自身を除く): 393727900

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 961, 1240, 1459, 1550, 1922, 2918, 3100, 3844, 4805, 5836, 6200, 7295, 7688, 9610, 11672, 14590, 19220, 24025, 29180, 36475, 38440, 45229, 48050, 58360, 72950, 90458, 96100, 145900, 180916, 192200, 226145, 291800, 361832, 452290, 904580, 1130725, 1402099, 1809160, 2261450, 2804198, 4522900, 5608396, 7010495, 9045800, 11216792, 14020990, 28041980, 35052475, 56083960, 70104950, 140209900, 280419800]

約数ペア:

[(1, 280419800), (2, 140209900), (4, 70104950), (5, 56083960), (8, 35052475), (10, 28041980), (20, 14020990), (25, 11216792), (31, 9045800), (40, 7010495), (50, 5608396), (62, 4522900), (100, 2804198), (124, 2261450), (155, 1809160), (200, 1402099), (248, 1130725), (310, 904580), (620, 452290), (775, 361832), (961, 291800), (1240, 226145), (1459, 192200), (1550, 180916), (1922, 145900), (2918, 96100), (3100, 90458), (3844, 72950), (4805, 58360), (5836, 48050), (6200, 45229), (7295, 38440), (7688, 36475), (9610, 29180), (11672, 24025), (14590, 19220)]