21779030

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{263}}^1$

素因数の和:310

約数の個数: 72

約数和(自身を含む): 49568112

約数和(自身を除く): 27789082

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 169, 182, 245, 263, 338, 455, 490, 526, 637, 845, 910, 1183, 1274, 1315, 1690, 1841, 2366, 2630, 3185, 3419, 3682, 5915, 6370, 6838, 8281, 9205, 11830, 12887, 16562, 17095, 18410, 23933, 25774, 34190, 41405, 44447, 47866, 64435, 82810, 88894, 119665, 128870, 167531, 222235, 239330, 311129, 335062, 444470, 622258, 837655, 1555645, 1675310, 2177903, 3111290, 4355806, 10889515, 21779030]

約数ペア:

[(1, 21779030), (2, 10889515), (5, 4355806), (7, 3111290), (10, 2177903), (13, 1675310), (14, 1555645), (26, 837655), (35, 622258), (49, 444470), (65, 335062), (70, 311129), (91, 239330), (98, 222235), (130, 167531), (169, 128870), (182, 119665), (245, 88894), (263, 82810), (338, 64435), (455, 47866), (490, 44447), (526, 41405), (637, 34190), (845, 25774), (910, 23933), (1183, 18410), (1274, 17095), (1315, 16562), (1690, 12887), (1841, 11830), (2366, 9205), (2630, 8281), (3185, 6838), (3419, 6370), (3682, 5915)]