21927240

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:356

約数の個数: 128

約数和(自身を含む): 74304000

約数和(自身を除く): 52376760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 79, 90, 108, 120, 135, 158, 180, 216, 237, 257, 270, 316, 360, 395, 474, 514, 540, 632, 711, 771, 790, 948, 1028, 1080, 1185, 1285, 1422, 1542, 1580, 1896, 2056, 2133, 2313, 2370, 2570, 2844, 3084, 3160, 3555, 3855, 4266, 4626, 4740, 5140, 5688, 6168, 6939, 7110, 7710, 8532, 9252, 9480, 10280, 10665, 11565, 13878, 14220, 15420, 17064, 18504, 20303, 21330, 23130, 27756, 28440, 30840, 34695, 40606, 42660, 46260, 55512, 60909, 69390, 81212, 85320, 92520, 101515, 121818, 138780, 162424, 182727, 203030, 243636, 277560, 304545, 365454, 406060, 487272, 548181, 609090, 730908, 812120, 913635, 1096362, 1218180, 1461816, 1827270, 2192724, 2436360, 2740905, 3654540, 4385448, 5481810, 7309080, 10963620, 21927240]

約数ペア:

[(1, 21927240), (2, 10963620), (3, 7309080), (4, 5481810), (5, 4385448), (6, 3654540), (8, 2740905), (9, 2436360), (10, 2192724), (12, 1827270), (15, 1461816), (18, 1218180), (20, 1096362), (24, 913635), (27, 812120), (30, 730908), (36, 609090), (40, 548181), (45, 487272), (54, 406060), (60, 365454), (72, 304545), (79, 277560), (90, 243636), (108, 203030), (120, 182727), (135, 162424), (158, 138780), (180, 121818), (216, 101515), (237, 92520), (257, 85320), (270, 81212), (316, 69390), (360, 60909), (395, 55512), (474, 46260), (514, 42660), (540, 40606), (632, 34695), (711, 30840), (771, 28440), (790, 27756), (948, 23130), (1028, 21330), (1080, 20303), (1185, 18504), (1285, 17064), (1422, 15420), (1542, 14220), (1580, 13878), (1896, 11565), (2056, 10665), (2133, 10280), (2313, 9480), (2370, 9252), (2570, 8532), (2844, 7710), (3084, 7110), (3160, 6939), (3555, 6168), (3855, 5688), (4266, 5140), (4626, 4740)]