20451834

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1231}}^1$

素因数の和:1323

約数の個数: 48

約数和(自身を含む): 48432384

約数和(自身を除く): 27980550

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 71, 78, 117, 142, 213, 234, 426, 639, 923, 1231, 1278, 1846, 2462, 2769, 3693, 5538, 7386, 8307, 11079, 16003, 16614, 22158, 32006, 48009, 87401, 96018, 144027, 174802, 262203, 288054, 524406, 786609, 1136213, 1573218, 2272426, 3408639, 6817278, 10225917, 20451834]

約数ペア:

[(1, 20451834), (2, 10225917), (3, 6817278), (6, 3408639), (9, 2272426), (13, 1573218), (18, 1136213), (26, 786609), (39, 524406), (71, 288054), (78, 262203), (117, 174802), (142, 144027), (213, 96018), (234, 87401), (426, 48009), (639, 32006), (923, 22158), (1231, 16614), (1278, 16003), (1846, 11079), (2462, 8307), (2769, 7386), (3693, 5538)]