66811640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{6449}}^1$

素因数の和:6504

約数の個数: 64

約数和(自身を含む): 176472000

約数和(自身を除く): 109660360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 2072, 2590, 5180, 6449, 10360, 12898, 25796, 32245, 45143, 51592, 64490, 90286, 128980, 180572, 225715, 238613, 257960, 361144, 451430, 477226, 902860, 954452, 1193065, 1670291, 1805720, 1908904, 2386130, 3340582, 4772260, 6681164, 8351455, 9544520, 13362328, 16702910, 33405820, 66811640]

約数ペア:

[(1, 66811640), (2, 33405820), (4, 16702910), (5, 13362328), (7, 9544520), (8, 8351455), (10, 6681164), (14, 4772260), (20, 3340582), (28, 2386130), (35, 1908904), (37, 1805720), (40, 1670291), (56, 1193065), (70, 954452), (74, 902860), (140, 477226), (148, 451430), (185, 361144), (259, 257960), (280, 238613), (296, 225715), (370, 180572), (518, 128980), (740, 90286), (1036, 64490), (1295, 51592), (1480, 45143), (2072, 32245), (2590, 25796), (5180, 12898), (6449, 10360)]