16561920

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{227}}^1$

素因数の和:270

約数の個数: 144

約数和(自身を含む): 55923840

約数和(自身を除く): 39361920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 64, 76, 80, 95, 96, 114, 120, 128, 152, 160, 190, 192, 227, 228, 240, 256, 285, 304, 320, 380, 384, 454, 456, 480, 570, 608, 640, 681, 760, 768, 908, 912, 960, 1135, 1140, 1216, 1280, 1362, 1520, 1816, 1824, 1920, 2270, 2280, 2432, 2724, 3040, 3405, 3632, 3648, 3840, 4313, 4540, 4560, 4864, 5448, 6080, 6810, 7264, 7296, 8626, 9080, 9120, 10896, 12160, 12939, 13620, 14528, 14592, 17252, 18160, 18240, 21565, 21792, 24320, 25878, 27240, 29056, 34504, 36320, 36480, 43130, 43584, 51756, 54480, 58112, 64695, 69008, 72640, 72960, 86260, 87168, 103512, 108960, 129390, 138016, 145280, 172520, 174336, 207024, 217920, 258780, 276032, 290560, 345040, 414048, 435840, 517560, 552064, 690080, 828096, 871680, 1035120, 1104128, 1380160, 1656192, 2070240, 2760320, 3312384, 4140480, 5520640, 8280960, 16561920]

約数ペア:

[(1, 16561920), (2, 8280960), (3, 5520640), (4, 4140480), (5, 3312384), (6, 2760320), (8, 2070240), (10, 1656192), (12, 1380160), (15, 1104128), (16, 1035120), (19, 871680), (20, 828096), (24, 690080), (30, 552064), (32, 517560), (38, 435840), (40, 414048), (48, 345040), (57, 290560), (60, 276032), (64, 258780), (76, 217920), (80, 207024), (95, 174336), (96, 172520), (114, 145280), (120, 138016), (128, 129390), (152, 108960), (160, 103512), (190, 87168), (192, 86260), (227, 72960), (228, 72640), (240, 69008), (256, 64695), (285, 58112), (304, 54480), (320, 51756), (380, 43584), (384, 43130), (454, 36480), (456, 36320), (480, 34504), (570, 29056), (608, 27240), (640, 25878), (681, 24320), (760, 21792), (768, 21565), (908, 18240), (912, 18160), (960, 17252), (1135, 14592), (1140, 14528), (1216, 13620), (1280, 12939), (1362, 12160), (1520, 10896), (1816, 9120), (1824, 9080), (1920, 8626), (2270, 7296), (2280, 7264), (2432, 6810), (2724, 6080), (3040, 5448), (3405, 4864), (3632, 4560), (3648, 4540), (3840, 4313)]