81802840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{463}}^1\times {\mathrm{631}}^1$

素因数の和:1112

約数の個数: 64

約数和(自身を含む): 211138560

約数和(自身を除く): 129335720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 463, 631, 926, 1262, 1852, 2315, 2524, 3155, 3241, 3704, 4417, 4630, 5048, 6310, 6482, 8834, 9260, 12620, 12964, 16205, 17668, 18520, 22085, 25240, 25928, 32410, 35336, 44170, 64820, 88340, 129640, 176680, 292153, 584306, 1168612, 1460765, 2045071, 2337224, 2921530, 4090142, 5843060, 8180284, 10225355, 11686120, 16360568, 20450710, 40901420, 81802840]

約数ペア:

[(1, 81802840), (2, 40901420), (4, 20450710), (5, 16360568), (7, 11686120), (8, 10225355), (10, 8180284), (14, 5843060), (20, 4090142), (28, 2921530), (35, 2337224), (40, 2045071), (56, 1460765), (70, 1168612), (140, 584306), (280, 292153), (463, 176680), (631, 129640), (926, 88340), (1262, 64820), (1852, 44170), (2315, 35336), (2524, 32410), (3155, 25928), (3241, 25240), (3704, 22085), (4417, 18520), (4630, 17668), (5048, 16205), (6310, 12964), (6482, 12620), (8834, 9260)]