1281495040

素因数分解:

$2^{12}\times 5^1\times 7^2\times {\mathrm{1277}}^1$

素因数の和:1320

約数の個数: 156

約数和(自身を含む): 3580089516

約数和(自身を除く): 2298594476

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, 196, 224, 245, 256, 280, 320, 392, 448, 490, 512, 560, 640, 784, 896, 980, 1024, 1120, 1277, 1280, 1568, 1792, 1960, 2048, 2240, 2554, 2560, 3136, 3584, 3920, 4096, 4480, 5108, 5120, 6272, 6385, 7168, 7840, 8939, 8960, 10216, 10240, 12544, 12770, 14336, 15680, 17878, 17920, 20432, 20480, 25088, 25540, 28672, 31360, 35756, 35840, 40864, 44695, 50176, 51080, 62573, 62720, 71512, 71680, 81728, 89390, 100352, 102160, 125146, 125440, 143024, 143360, 163456, 178780, 200704, 204320, 250292, 250880, 286048, 312865, 326912, 357560, 408640, 500584, 501760, 572096, 625730, 653824, 715120, 817280, 1001168, 1003520, 1144192, 1251460, 1307648, 1430240, 1634560, 2002336, 2288384, 2502920, 2615296, 2860480, 3269120, 4004672, 4576768, 5005840, 5230592, 5720960, 6538240, 8009344, 9153536, 10011680, 11441920, 13076480, 16018688, 18307072, 20023360, 22883840, 26152960, 32037376, 36614144, 40046720, 45767680, 64074752, 80093440, 91535360, 128149504, 160186880, 183070720, 256299008, 320373760, 640747520, 1281495040]

約数ペア:

[(1, 1281495040), (2, 640747520), (4, 320373760), (5, 256299008), (7, 183070720), (8, 160186880), (10, 128149504), (14, 91535360), (16, 80093440), (20, 64074752), (28, 45767680), (32, 40046720), (35, 36614144), (40, 32037376), (49, 26152960), (56, 22883840), (64, 20023360), (70, 18307072), (80, 16018688), (98, 13076480), (112, 11441920), (128, 10011680), (140, 9153536), (160, 8009344), (196, 6538240), (224, 5720960), (245, 5230592), (256, 5005840), (280, 4576768), (320, 4004672), (392, 3269120), (448, 2860480), (490, 2615296), (512, 2502920), (560, 2288384), (640, 2002336), (784, 1634560), (896, 1430240), (980, 1307648), (1024, 1251460), (1120, 1144192), (1277, 1003520), (1280, 1001168), (1568, 817280), (1792, 715120), (1960, 653824), (2048, 625730), (2240, 572096), (2554, 501760), (2560, 500584), (3136, 408640), (3584, 357560), (3920, 326912), (4096, 312865), (4480, 286048), (5108, 250880), (5120, 250292), (6272, 204320), (6385, 200704), (7168, 178780), (7840, 163456), (8939, 143360), (8960, 143024), (10216, 125440), (10240, 125146), (12544, 102160), (12770, 100352), (14336, 89390), (15680, 81728), (17878, 71680), (17920, 71512), (20432, 62720), (20480, 62573), (25088, 51080), (25540, 50176), (28672, 44695), (31360, 40864), (35756, 35840)]