81786880

素因数分解:

$2^{11}\times 5^1\times 7^2\times {\mathrm{163}}^1$

素因数の和:204

約数の個数: 144

約数和(自身を含む): 229680360

約数和(自身を除く): 147893480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 163, 196, 224, 245, 256, 280, 320, 326, 392, 448, 490, 512, 560, 640, 652, 784, 815, 896, 980, 1024, 1120, 1141, 1280, 1304, 1568, 1630, 1792, 1960, 2048, 2240, 2282, 2560, 2608, 3136, 3260, 3584, 3920, 4480, 4564, 5120, 5216, 5705, 6272, 6520, 7168, 7840, 7987, 8960, 9128, 10240, 10432, 11410, 12544, 13040, 14336, 15680, 15974, 17920, 18256, 20864, 22820, 25088, 26080, 31360, 31948, 35840, 36512, 39935, 41728, 45640, 50176, 52160, 62720, 63896, 71680, 73024, 79870, 83456, 91280, 100352, 104320, 125440, 127792, 146048, 159740, 166912, 182560, 208640, 250880, 255584, 292096, 319480, 333824, 365120, 417280, 501760, 511168, 584192, 638960, 730240, 834560, 1022336, 1168384, 1277920, 1460480, 1669120, 2044672, 2336768, 2555840, 2920960, 4089344, 5111680, 5841920, 8178688, 10223360, 11683840, 16357376, 20446720, 40893440, 81786880]

約数ペア:

[(1, 81786880), (2, 40893440), (4, 20446720), (5, 16357376), (7, 11683840), (8, 10223360), (10, 8178688), (14, 5841920), (16, 5111680), (20, 4089344), (28, 2920960), (32, 2555840), (35, 2336768), (40, 2044672), (49, 1669120), (56, 1460480), (64, 1277920), (70, 1168384), (80, 1022336), (98, 834560), (112, 730240), (128, 638960), (140, 584192), (160, 511168), (163, 501760), (196, 417280), (224, 365120), (245, 333824), (256, 319480), (280, 292096), (320, 255584), (326, 250880), (392, 208640), (448, 182560), (490, 166912), (512, 159740), (560, 146048), (640, 127792), (652, 125440), (784, 104320), (815, 100352), (896, 91280), (980, 83456), (1024, 79870), (1120, 73024), (1141, 71680), (1280, 63896), (1304, 62720), (1568, 52160), (1630, 50176), (1792, 45640), (1960, 41728), (2048, 39935), (2240, 36512), (2282, 35840), (2560, 31948), (2608, 31360), (3136, 26080), (3260, 25088), (3584, 22820), (3920, 20864), (4480, 18256), (4564, 17920), (5120, 15974), (5216, 15680), (5705, 14336), (6272, 13040), (6520, 12544), (7168, 11410), (7840, 10432), (7987, 10240), (8960, 9128)]