199110320

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{491}}^1$

素因数の和:678

約数の個数: 80

約数和(自身を含む): 479888928

約数和(自身を除く): 280778608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 137, 148, 185, 274, 296, 370, 491, 548, 592, 685, 740, 982, 1096, 1370, 1480, 1964, 2192, 2455, 2740, 2960, 3928, 4910, 5069, 5480, 7856, 9820, 10138, 10960, 18167, 19640, 20276, 25345, 36334, 39280, 40552, 50690, 67267, 72668, 81104, 90835, 101380, 134534, 145336, 181670, 202760, 269068, 290672, 336335, 363340, 405520, 538136, 672670, 726680, 1076272, 1345340, 1453360, 2488879, 2690680, 4977758, 5381360, 9955516, 12444395, 19911032, 24888790, 39822064, 49777580, 99555160, 199110320]

約数ペア:

[(1, 199110320), (2, 99555160), (4, 49777580), (5, 39822064), (8, 24888790), (10, 19911032), (16, 12444395), (20, 9955516), (37, 5381360), (40, 4977758), (74, 2690680), (80, 2488879), (137, 1453360), (148, 1345340), (185, 1076272), (274, 726680), (296, 672670), (370, 538136), (491, 405520), (548, 363340), (592, 336335), (685, 290672), (740, 269068), (982, 202760), (1096, 181670), (1370, 145336), (1480, 134534), (1964, 101380), (2192, 90835), (2455, 81104), (2740, 72668), (2960, 67267), (3928, 50690), (4910, 40552), (5069, 39280), (5480, 36334), (7856, 25345), (9820, 20276), (10138, 19640), (10960, 18167)]