19890456747

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{347}}^1\times {\mathrm{461}}^1$

素因数の和:1040

約数の個数: 64

約数和(自身を含む): 31609847808

約数和(自身を除く): 11719391061

約数列:

[1, 3, 7, 21, 31, 93, 191, 217, 347, 461, 573, 651, 1041, 1337, 1383, 2429, 3227, 4011, 5921, 7287, 9681, 10757, 14291, 17763, 32271, 41447, 42873, 66277, 75299, 88051, 100037, 124341, 159967, 198831, 225897, 264153, 300111, 463939, 479901, 616357, 1119769, 1391817, 1849071, 2054587, 2729581, 3359307, 4958977, 6163761, 8188743, 14382109, 14876931, 19107067, 30553697, 34712839, 43146327, 57321201, 91661091, 104138517, 213875879, 641627637, 947164607, 2841493821, 6630152249, 19890456747]

約数ペア:

[(1, 19890456747), (3, 6630152249), (7, 2841493821), (21, 947164607), (31, 641627637), (93, 213875879), (191, 104138517), (217, 91661091), (347, 57321201), (461, 43146327), (573, 34712839), (651, 30553697), (1041, 19107067), (1337, 14876931), (1383, 14382109), (2429, 8188743), (3227, 6163761), (4011, 4958977), (5921, 3359307), (7287, 2729581), (9681, 2054587), (10757, 1849071), (14291, 1391817), (17763, 1119769), (32271, 616357), (41447, 479901), (42873, 463939), (66277, 300111), (75299, 264153), (88051, 225897), (100037, 198831), (124341, 159967)]