72781371

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{439}}^1$

素因数の和:580

約数の個数: 36

約数和(自身を含む): 115143600

約数和(自身を除く): 42362229

約数列:

[1, 3, 9, 13, 39, 109, 117, 169, 327, 439, 507, 981, 1317, 1417, 1521, 3951, 4251, 5707, 12753, 17121, 18421, 47851, 51363, 55263, 74191, 143553, 165789, 222573, 430659, 622063, 667719, 1866189, 5598567, 8086819, 24260457, 72781371]

約数ペア:

[(1, 72781371), (3, 24260457), (9, 8086819), (13, 5598567), (39, 1866189), (109, 667719), (117, 622063), (169, 430659), (327, 222573), (439, 165789), (507, 143553), (981, 74191), (1317, 55263), (1417, 51363), (1521, 47851), (3951, 18421), (4251, 17121), (5707, 12753)]