2688140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 7105392

約数和(自身を除く): 4417252

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 211, 245, 260, 364, 422, 455, 490, 637, 844, 910, 980, 1055, 1274, 1477, 1820, 2110, 2548, 2743, 2954, 3185, 4220, 5486, 5908, 6370, 7385, 10339, 10972, 12740, 13715, 14770, 19201, 20678, 27430, 29540, 38402, 41356, 51695, 54860, 76804, 96005, 103390, 134407, 192010, 206780, 268814, 384020, 537628, 672035, 1344070, 2688140]

約数ペア:

[(1, 2688140), (2, 1344070), (4, 672035), (5, 537628), (7, 384020), (10, 268814), (13, 206780), (14, 192010), (20, 134407), (26, 103390), (28, 96005), (35, 76804), (49, 54860), (52, 51695), (65, 41356), (70, 38402), (91, 29540), (98, 27430), (130, 20678), (140, 19201), (182, 14770), (196, 13715), (211, 12740), (245, 10972), (260, 10339), (364, 7385), (422, 6370), (455, 5908), (490, 5486), (637, 4220), (844, 3185), (910, 2954), (980, 2743), (1055, 2548), (1274, 2110), (1477, 1820)]