20542998

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{83}}^2$

素因数の和:249

約数の個数: 48

約数和(自身を含む): 48197376

約数和(自身を除く): 27654378

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 71, 83, 142, 166, 213, 249, 426, 497, 498, 581, 994, 1162, 1491, 1743, 2982, 3486, 5893, 6889, 11786, 13778, 17679, 20667, 35358, 41251, 41334, 48223, 82502, 96446, 123753, 144669, 247506, 289338, 489119, 978238, 1467357, 2934714, 3423833, 6847666, 10271499, 20542998]

約数ペア:

[(1, 20542998), (2, 10271499), (3, 6847666), (6, 3423833), (7, 2934714), (14, 1467357), (21, 978238), (42, 489119), (71, 289338), (83, 247506), (142, 144669), (166, 123753), (213, 96446), (249, 82502), (426, 48223), (497, 41334), (498, 41251), (581, 35358), (994, 20667), (1162, 17679), (1491, 13778), (1743, 11786), (2982, 6889), (3486, 5893)]