66972880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{907}}^1$

素因数の和:1004

約数の個数: 80

約数和(自身を含む): 170239104

約数和(自身を除く): 103266224

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 71, 80, 104, 130, 142, 208, 260, 284, 355, 520, 568, 710, 907, 923, 1040, 1136, 1420, 1814, 1846, 2840, 3628, 3692, 4535, 4615, 5680, 7256, 7384, 9070, 9230, 11791, 14512, 14768, 18140, 18460, 23582, 36280, 36920, 47164, 58955, 64397, 72560, 73840, 94328, 117910, 128794, 188656, 235820, 257588, 321985, 471640, 515176, 643970, 837161, 943280, 1030352, 1287940, 1674322, 2575880, 3348644, 4185805, 5151760, 6697288, 8371610, 13394576, 16743220, 33486440, 66972880]

約数ペア:

[(1, 66972880), (2, 33486440), (4, 16743220), (5, 13394576), (8, 8371610), (10, 6697288), (13, 5151760), (16, 4185805), (20, 3348644), (26, 2575880), (40, 1674322), (52, 1287940), (65, 1030352), (71, 943280), (80, 837161), (104, 643970), (130, 515176), (142, 471640), (208, 321985), (260, 257588), (284, 235820), (355, 188656), (520, 128794), (568, 117910), (710, 94328), (907, 73840), (923, 72560), (1040, 64397), (1136, 58955), (1420, 47164), (1814, 36920), (1846, 36280), (2840, 23582), (3628, 18460), (3692, 18140), (4535, 14768), (4615, 14512), (5680, 11791), (7256, 9230), (7384, 9070)]