21342720

素因数分解:

$2^9\times 3^1\times 5^1\times 7^1\times {\mathrm{397}}^1$

素因数の和:430

約数の個数: 160

約数和(自身を含む): 78173568

約数和(自身を除く): 56830848

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 256, 280, 320, 336, 384, 397, 420, 448, 480, 512, 560, 640, 672, 768, 794, 840, 896, 960, 1120, 1191, 1280, 1344, 1536, 1588, 1680, 1792, 1920, 1985, 2240, 2382, 2560, 2688, 2779, 3176, 3360, 3584, 3840, 3970, 4480, 4764, 5376, 5558, 5955, 6352, 6720, 7680, 7940, 8337, 8960, 9528, 10752, 11116, 11910, 12704, 13440, 13895, 15880, 16674, 17920, 19056, 22232, 23820, 25408, 26880, 27790, 31760, 33348, 38112, 41685, 44464, 47640, 50816, 53760, 55580, 63520, 66696, 76224, 83370, 88928, 95280, 101632, 111160, 127040, 133392, 152448, 166740, 177856, 190560, 203264, 222320, 254080, 266784, 304896, 333480, 355712, 381120, 444640, 508160, 533568, 609792, 666960, 711424, 762240, 889280, 1016320, 1067136, 1333920, 1422848, 1524480, 1778560, 2134272, 2667840, 3048960, 3557120, 4268544, 5335680, 7114240, 10671360, 21342720]

約数ペア:

[(1, 21342720), (2, 10671360), (3, 7114240), (4, 5335680), (5, 4268544), (6, 3557120), (7, 3048960), (8, 2667840), (10, 2134272), (12, 1778560), (14, 1524480), (15, 1422848), (16, 1333920), (20, 1067136), (21, 1016320), (24, 889280), (28, 762240), (30, 711424), (32, 666960), (35, 609792), (40, 533568), (42, 508160), (48, 444640), (56, 381120), (60, 355712), (64, 333480), (70, 304896), (80, 266784), (84, 254080), (96, 222320), (105, 203264), (112, 190560), (120, 177856), (128, 166740), (140, 152448), (160, 133392), (168, 127040), (192, 111160), (210, 101632), (224, 95280), (240, 88928), (256, 83370), (280, 76224), (320, 66696), (336, 63520), (384, 55580), (397, 53760), (420, 50816), (448, 47640), (480, 44464), (512, 41685), (560, 38112), (640, 33348), (672, 31760), (768, 27790), (794, 26880), (840, 25408), (896, 23820), (960, 22232), (1120, 19056), (1191, 17920), (1280, 16674), (1344, 15880), (1536, 13895), (1588, 13440), (1680, 12704), (1792, 11910), (1920, 11116), (1985, 10752), (2240, 9528), (2382, 8960), (2560, 8337), (2688, 7940), (2779, 7680), (3176, 6720), (3360, 6352), (3584, 5955), (3840, 5558), (3970, 5376), (4480, 4764)]