28263040

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:154

約数の個数: 128

約数和(自身を含む): 75398400

約数和(自身を除く): 47135360

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 43, 52, 64, 65, 79, 80, 86, 104, 128, 130, 158, 160, 172, 208, 215, 260, 316, 320, 344, 395, 416, 430, 520, 559, 632, 640, 688, 790, 832, 860, 1027, 1040, 1118, 1264, 1376, 1580, 1664, 1720, 2054, 2080, 2236, 2528, 2752, 2795, 3160, 3397, 3440, 4108, 4160, 4472, 5056, 5135, 5504, 5590, 6320, 6794, 6880, 8216, 8320, 8944, 10112, 10270, 11180, 12640, 13588, 13760, 16432, 16985, 17888, 20540, 22360, 25280, 27176, 27520, 32864, 33970, 35776, 41080, 44161, 44720, 50560, 54352, 65728, 67940, 71552, 82160, 88322, 89440, 108704, 131456, 135880, 164320, 176644, 178880, 217408, 220805, 271760, 328640, 353288, 357760, 434816, 441610, 543520, 657280, 706576, 883220, 1087040, 1413152, 1766440, 2174080, 2826304, 3532880, 5652608, 7065760, 14131520, 28263040]

約数ペア:

[(1, 28263040), (2, 14131520), (4, 7065760), (5, 5652608), (8, 3532880), (10, 2826304), (13, 2174080), (16, 1766440), (20, 1413152), (26, 1087040), (32, 883220), (40, 706576), (43, 657280), (52, 543520), (64, 441610), (65, 434816), (79, 357760), (80, 353288), (86, 328640), (104, 271760), (128, 220805), (130, 217408), (158, 178880), (160, 176644), (172, 164320), (208, 135880), (215, 131456), (260, 108704), (316, 89440), (320, 88322), (344, 82160), (395, 71552), (416, 67940), (430, 65728), (520, 54352), (559, 50560), (632, 44720), (640, 44161), (688, 41080), (790, 35776), (832, 33970), (860, 32864), (1027, 27520), (1040, 27176), (1118, 25280), (1264, 22360), (1376, 20540), (1580, 17888), (1664, 16985), (1720, 16432), (2054, 13760), (2080, 13588), (2236, 12640), (2528, 11180), (2752, 10270), (2795, 10112), (3160, 8944), (3397, 8320), (3440, 8216), (4108, 6880), (4160, 6794), (4472, 6320), (5056, 5590), (5135, 5504)]