71758540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1979}}^1$

素因数の和:2039

約数の個数: 72

約数和(自身を含む): 180124560

約数和(自身を除く): 108366020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 185, 196, 245, 259, 370, 490, 518, 740, 980, 1036, 1295, 1813, 1979, 2590, 3626, 3958, 5180, 7252, 7916, 9065, 9895, 13853, 18130, 19790, 27706, 36260, 39580, 55412, 69265, 73223, 96971, 138530, 146446, 193942, 277060, 292892, 366115, 387884, 484855, 512561, 732230, 969710, 1025122, 1464460, 1939420, 2050244, 2562805, 3587927, 5125610, 7175854, 10251220, 14351708, 17939635, 35879270, 71758540]

約数ペア:

[(1, 71758540), (2, 35879270), (4, 17939635), (5, 14351708), (7, 10251220), (10, 7175854), (14, 5125610), (20, 3587927), (28, 2562805), (35, 2050244), (37, 1939420), (49, 1464460), (70, 1025122), (74, 969710), (98, 732230), (140, 512561), (148, 484855), (185, 387884), (196, 366115), (245, 292892), (259, 277060), (370, 193942), (490, 146446), (518, 138530), (740, 96971), (980, 73223), (1036, 69265), (1295, 55412), (1813, 39580), (1979, 36260), (2590, 27706), (3626, 19790), (3958, 18130), (5180, 13853), (7252, 9895), (7916, 9065)]