20284160

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:110

約数の個数: 144

約数和(自身を含む): 55629504

約数和(自身を除く): 35345344

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 53, 64, 65, 80, 92, 104, 106, 115, 128, 130, 160, 184, 208, 212, 230, 256, 260, 265, 299, 320, 368, 416, 424, 460, 520, 530, 598, 640, 689, 736, 832, 848, 920, 1040, 1060, 1196, 1219, 1280, 1378, 1472, 1495, 1664, 1696, 1840, 2080, 2120, 2392, 2438, 2756, 2944, 2990, 3328, 3392, 3445, 3680, 4160, 4240, 4784, 4876, 5512, 5888, 5980, 6095, 6784, 6890, 7360, 8320, 8480, 9568, 9752, 11024, 11960, 12190, 13568, 13780, 14720, 15847, 16640, 16960, 19136, 19504, 22048, 23920, 24380, 27560, 29440, 31694, 33920, 38272, 39008, 44096, 47840, 48760, 55120, 63388, 67840, 76544, 78016, 79235, 88192, 95680, 97520, 110240, 126776, 156032, 158470, 176384, 191360, 195040, 220480, 253552, 312064, 316940, 382720, 390080, 440960, 507104, 633880, 780160, 881920, 1014208, 1267760, 1560320, 2028416, 2535520, 4056832, 5071040, 10142080, 20284160]

約数ペア:

[(1, 20284160), (2, 10142080), (4, 5071040), (5, 4056832), (8, 2535520), (10, 2028416), (13, 1560320), (16, 1267760), (20, 1014208), (23, 881920), (26, 780160), (32, 633880), (40, 507104), (46, 440960), (52, 390080), (53, 382720), (64, 316940), (65, 312064), (80, 253552), (92, 220480), (104, 195040), (106, 191360), (115, 176384), (128, 158470), (130, 156032), (160, 126776), (184, 110240), (208, 97520), (212, 95680), (230, 88192), (256, 79235), (260, 78016), (265, 76544), (299, 67840), (320, 63388), (368, 55120), (416, 48760), (424, 47840), (460, 44096), (520, 39008), (530, 38272), (598, 33920), (640, 31694), (689, 29440), (736, 27560), (832, 24380), (848, 23920), (920, 22048), (1040, 19504), (1060, 19136), (1196, 16960), (1219, 16640), (1280, 15847), (1378, 14720), (1472, 13780), (1495, 13568), (1664, 12190), (1696, 11960), (1840, 11024), (2080, 9752), (2120, 9568), (2392, 8480), (2438, 8320), (2756, 7360), (2944, 6890), (2990, 6784), (3328, 6095), (3392, 5980), (3445, 5888), (3680, 5512), (4160, 4876), (4240, 4784)]