81574320

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{449}}^1\times {\mathrm{757}}^1$

素因数の和:1222

約数の個数: 80

約数和(自身を含む): 253778400

約数和(自身を除く): 172204080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 449, 757, 898, 1347, 1514, 1796, 2245, 2271, 2694, 3028, 3592, 3785, 4490, 4542, 5388, 6056, 6735, 7184, 7570, 8980, 9084, 10776, 11355, 12112, 13470, 15140, 17960, 18168, 21552, 22710, 26940, 30280, 35920, 36336, 45420, 53880, 60560, 90840, 107760, 181680, 339893, 679786, 1019679, 1359572, 1699465, 2039358, 2719144, 3398930, 4078716, 5098395, 5438288, 6797860, 8157432, 10196790, 13595720, 16314864, 20393580, 27191440, 40787160, 81574320]

約数ペア:

[(1, 81574320), (2, 40787160), (3, 27191440), (4, 20393580), (5, 16314864), (6, 13595720), (8, 10196790), (10, 8157432), (12, 6797860), (15, 5438288), (16, 5098395), (20, 4078716), (24, 3398930), (30, 2719144), (40, 2039358), (48, 1699465), (60, 1359572), (80, 1019679), (120, 679786), (240, 339893), (449, 181680), (757, 107760), (898, 90840), (1347, 60560), (1514, 53880), (1796, 45420), (2245, 36336), (2271, 35920), (2694, 30280), (3028, 26940), (3592, 22710), (3785, 21552), (4490, 18168), (4542, 17960), (5388, 15140), (6056, 13470), (6735, 12112), (7184, 11355), (7570, 10776), (8980, 9084)]