66859280

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:312

約数の個数: 80

約数和(自身を含む): 160704000

約数和(自身を除く): 93844720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 79, 80, 142, 149, 158, 284, 298, 316, 355, 395, 568, 596, 632, 710, 745, 790, 1136, 1192, 1264, 1420, 1490, 1580, 2384, 2840, 2980, 3160, 5609, 5680, 5960, 6320, 10579, 11218, 11771, 11920, 21158, 22436, 23542, 28045, 42316, 44872, 47084, 52895, 56090, 58855, 84632, 89744, 94168, 105790, 112180, 117710, 169264, 188336, 211580, 224360, 235420, 423160, 448720, 470840, 835741, 846320, 941680, 1671482, 3342964, 4178705, 6685928, 8357410, 13371856, 16714820, 33429640, 66859280]

約数ペア:

[(1, 66859280), (2, 33429640), (4, 16714820), (5, 13371856), (8, 8357410), (10, 6685928), (16, 4178705), (20, 3342964), (40, 1671482), (71, 941680), (79, 846320), (80, 835741), (142, 470840), (149, 448720), (158, 423160), (284, 235420), (298, 224360), (316, 211580), (355, 188336), (395, 169264), (568, 117710), (596, 112180), (632, 105790), (710, 94168), (745, 89744), (790, 84632), (1136, 58855), (1192, 56090), (1264, 52895), (1420, 47084), (1490, 44872), (1580, 42316), (2384, 28045), (2840, 23542), (2980, 22436), (3160, 21158), (5609, 11920), (5680, 11771), (5960, 11218), (6320, 10579)]