19877913

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 35389440

約数和(自身を除く): 15511527

約数列:

[1, 3, 9, 11, 17, 27, 31, 33, 51, 93, 99, 127, 153, 187, 279, 297, 341, 381, 459, 527, 561, 837, 1023, 1143, 1397, 1581, 1683, 2159, 3069, 3429, 3937, 4191, 4743, 5049, 5797, 6477, 9207, 11811, 12573, 14229, 17391, 19431, 23749, 35433, 37719, 43307, 52173, 58293, 66929, 71247, 106299, 129921, 156519, 200787, 213741, 389763, 602361, 641223, 736219, 1169289, 1807083, 2208657, 6625971, 19877913]

約数ペア:

[(1, 19877913), (3, 6625971), (9, 2208657), (11, 1807083), (17, 1169289), (27, 736219), (31, 641223), (33, 602361), (51, 389763), (93, 213741), (99, 200787), (127, 156519), (153, 129921), (187, 106299), (279, 71247), (297, 66929), (341, 58293), (381, 52173), (459, 43307), (527, 37719), (561, 35433), (837, 23749), (1023, 19431), (1143, 17391), (1397, 14229), (1581, 12573), (1683, 11811), (2159, 9207), (3069, 6477), (3429, 5797), (3937, 5049), (4191, 4743)]