80540980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{4363}}^1$

素因数の和:4456

約数の個数: 48

約数和(自身を含む): 184754304

約数和(自身を除く): 104213324

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 710, 923, 1420, 1846, 3692, 4363, 4615, 8726, 9230, 17452, 18460, 21815, 43630, 56719, 87260, 113438, 226876, 283595, 309773, 567190, 619546, 1134380, 1239092, 1548865, 3097730, 4027049, 6195460, 8054098, 16108196, 20135245, 40270490, 80540980]

約数ペア:

[(1, 80540980), (2, 40270490), (4, 20135245), (5, 16108196), (10, 8054098), (13, 6195460), (20, 4027049), (26, 3097730), (52, 1548865), (65, 1239092), (71, 1134380), (130, 619546), (142, 567190), (260, 309773), (284, 283595), (355, 226876), (710, 113438), (923, 87260), (1420, 56719), (1846, 43630), (3692, 21815), (4363, 18460), (4615, 17452), (8726, 9230)]