81789120

素因数分解:

$2^6\times 3^2\times 5^1\times 7^1\times {\mathrm{4057}}^1$

素因数の和:4087

約数の個数: 168

約数和(自身を含む): 321588384

約数和(自身を除く): 239799264

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 420, 448, 480, 504, 560, 576, 630, 672, 720, 840, 960, 1008, 1120, 1260, 1344, 1440, 1680, 2016, 2240, 2520, 2880, 3360, 4032, 4057, 5040, 6720, 8114, 10080, 12171, 16228, 20160, 20285, 24342, 28399, 32456, 36513, 40570, 48684, 56798, 60855, 64912, 73026, 81140, 85197, 97368, 113596, 121710, 129824, 141995, 146052, 162280, 170394, 182565, 194736, 227192, 243420, 255591, 259648, 283990, 292104, 324560, 340788, 365130, 389472, 425985, 454384, 486840, 511182, 567980, 584208, 649120, 681576, 730260, 778944, 851970, 908768, 973680, 1022364, 1135960, 1168416, 1277955, 1298240, 1363152, 1460520, 1703940, 1817536, 1947360, 2044728, 2271920, 2336832, 2555910, 2726304, 2921040, 3407880, 3894720, 4089456, 4543840, 5111820, 5452608, 5842080, 6815760, 8178912, 9087680, 10223640, 11684160, 13631520, 16357824, 20447280, 27263040, 40894560, 81789120]

約数ペア:

[(1, 81789120), (2, 40894560), (3, 27263040), (4, 20447280), (5, 16357824), (6, 13631520), (7, 11684160), (8, 10223640), (9, 9087680), (10, 8178912), (12, 6815760), (14, 5842080), (15, 5452608), (16, 5111820), (18, 4543840), (20, 4089456), (21, 3894720), (24, 3407880), (28, 2921040), (30, 2726304), (32, 2555910), (35, 2336832), (36, 2271920), (40, 2044728), (42, 1947360), (45, 1817536), (48, 1703940), (56, 1460520), (60, 1363152), (63, 1298240), (64, 1277955), (70, 1168416), (72, 1135960), (80, 1022364), (84, 973680), (90, 908768), (96, 851970), (105, 778944), (112, 730260), (120, 681576), (126, 649120), (140, 584208), (144, 567980), (160, 511182), (168, 486840), (180, 454384), (192, 425985), (210, 389472), (224, 365130), (240, 340788), (252, 324560), (280, 292104), (288, 283990), (315, 259648), (320, 255591), (336, 243420), (360, 227192), (420, 194736), (448, 182565), (480, 170394), (504, 162280), (560, 146052), (576, 141995), (630, 129824), (672, 121710), (720, 113596), (840, 97368), (960, 85197), (1008, 81140), (1120, 73026), (1260, 64912), (1344, 60855), (1440, 56798), (1680, 48684), (2016, 40570), (2240, 36513), (2520, 32456), (2880, 28399), (3360, 24342), (4032, 20285), (4057, 20160), (5040, 16228), (6720, 12171), (8114, 10080)]