257029017

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:354

約数の個数: 64

約数和(自身を含む): 429834240

約数和(自身を除く): 172805223

約数列:

[1, 3, 7, 19, 21, 43, 57, 71, 129, 133, 211, 213, 301, 399, 497, 633, 817, 903, 1349, 1477, 1491, 2451, 3053, 4009, 4047, 4431, 5719, 9073, 9159, 9443, 12027, 14981, 17157, 21371, 27219, 28063, 28329, 44943, 58007, 63511, 64113, 84189, 104867, 172387, 174021, 190533, 284639, 314601, 406049, 517161, 644183, 853917, 1206709, 1218147, 1932549, 1992473, 3620127, 4509281, 5977419, 12239477, 13527843, 36718431, 85676339, 257029017]

約数ペア:

[(1, 257029017), (3, 85676339), (7, 36718431), (19, 13527843), (21, 12239477), (43, 5977419), (57, 4509281), (71, 3620127), (129, 1992473), (133, 1932549), (211, 1218147), (213, 1206709), (301, 853917), (399, 644183), (497, 517161), (633, 406049), (817, 314601), (903, 284639), (1349, 190533), (1477, 174021), (1491, 172387), (2451, 104867), (3053, 84189), (4009, 64113), (4047, 63511), (4431, 58007), (5719, 44943), (9073, 28329), (9159, 28063), (9443, 27219), (12027, 21371), (14981, 17157)]