19870284

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{719}}^1$

素因数の和:787

約数の個数: 72

約数和(自身を含む): 55157760

約数和(自身を除く): 35287476

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 47, 49, 84, 94, 98, 141, 147, 188, 196, 282, 294, 329, 564, 588, 658, 719, 987, 1316, 1438, 1974, 2157, 2303, 2876, 3948, 4314, 4606, 5033, 6909, 8628, 9212, 10066, 13818, 15099, 20132, 27636, 30198, 33793, 35231, 60396, 67586, 70462, 101379, 105693, 135172, 140924, 202758, 211386, 236551, 405516, 422772, 473102, 709653, 946204, 1419306, 1655857, 2838612, 3311714, 4967571, 6623428, 9935142, 19870284]

約数ペア:

[(1, 19870284), (2, 9935142), (3, 6623428), (4, 4967571), (6, 3311714), (7, 2838612), (12, 1655857), (14, 1419306), (21, 946204), (28, 709653), (42, 473102), (47, 422772), (49, 405516), (84, 236551), (94, 211386), (98, 202758), (141, 140924), (147, 135172), (188, 105693), (196, 101379), (282, 70462), (294, 67586), (329, 60396), (564, 35231), (588, 33793), (658, 30198), (719, 27636), (987, 20132), (1316, 15099), (1438, 13818), (1974, 10066), (2157, 9212), (2303, 8628), (2876, 6909), (3948, 5033), (4314, 4606)]