20417520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{241}}^1\times {\mathrm{353}}^1$

素因数の和:610

約数の個数: 80

約数和(自身を含む): 63736992

約数和(自身を除く): 43319472

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 241, 353, 482, 706, 723, 964, 1059, 1205, 1412, 1446, 1765, 1928, 2118, 2410, 2824, 2892, 3530, 3615, 3856, 4236, 4820, 5295, 5648, 5784, 7060, 7230, 8472, 9640, 10590, 11568, 14120, 14460, 16944, 19280, 21180, 28240, 28920, 42360, 57840, 84720, 85073, 170146, 255219, 340292, 425365, 510438, 680584, 850730, 1020876, 1276095, 1361168, 1701460, 2041752, 2552190, 3402920, 4083504, 5104380, 6805840, 10208760, 20417520]

約数ペア:

[(1, 20417520), (2, 10208760), (3, 6805840), (4, 5104380), (5, 4083504), (6, 3402920), (8, 2552190), (10, 2041752), (12, 1701460), (15, 1361168), (16, 1276095), (20, 1020876), (24, 850730), (30, 680584), (40, 510438), (48, 425365), (60, 340292), (80, 255219), (120, 170146), (240, 85073), (241, 84720), (353, 57840), (482, 42360), (706, 28920), (723, 28240), (964, 21180), (1059, 19280), (1205, 16944), (1412, 14460), (1446, 14120), (1765, 11568), (1928, 10590), (2118, 9640), (2410, 8472), (2824, 7230), (2892, 7060), (3530, 5784), (3615, 5648), (3856, 5295), (4236, 4820)]