19667180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1129}}^1$

素因数の和:1218

約数の個数: 48

約数和(自身を含む): 45181920

約数和(自身を除く): 25514740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 335, 670, 871, 1129, 1340, 1742, 2258, 3484, 4355, 4516, 5645, 8710, 11290, 14677, 17420, 22580, 29354, 58708, 73385, 75643, 146770, 151286, 293540, 302572, 378215, 756430, 983359, 1512860, 1966718, 3933436, 4916795, 9833590, 19667180]

約数ペア:

[(1, 19667180), (2, 9833590), (4, 4916795), (5, 3933436), (10, 1966718), (13, 1512860), (20, 983359), (26, 756430), (52, 378215), (65, 302572), (67, 293540), (130, 151286), (134, 146770), (260, 75643), (268, 73385), (335, 58708), (670, 29354), (871, 22580), (1129, 17420), (1340, 14677), (1742, 11290), (2258, 8710), (3484, 5645), (4355, 4516)]