71991140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{3793}}^1$

素因数の和:3888

約数の個数: 48

約数和(自身を含む): 165084528

約数和(自身を除く): 93093388

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 260, 292, 365, 730, 949, 1460, 1898, 3793, 3796, 4745, 7586, 9490, 15172, 18965, 18980, 37930, 49309, 75860, 98618, 197236, 246545, 276889, 493090, 553778, 986180, 1107556, 1384445, 2768890, 3599557, 5537780, 7199114, 14398228, 17997785, 35995570, 71991140]

約数ペア:

[(1, 71991140), (2, 35995570), (4, 17997785), (5, 14398228), (10, 7199114), (13, 5537780), (20, 3599557), (26, 2768890), (52, 1384445), (65, 1107556), (73, 986180), (130, 553778), (146, 493090), (260, 276889), (292, 246545), (365, 197236), (730, 98618), (949, 75860), (1460, 49309), (1898, 37930), (3793, 18980), (3796, 18965), (4745, 15172), (7586, 9490)]