28687360

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1$

素因数の和:469

約数の個数: 88

約数和(自身を含む): 74281536

約数和(自身を除く): 45594176

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 431, 512, 520, 640, 832, 862, 1024, 1040, 1280, 1664, 1724, 2080, 2155, 2560, 3328, 3448, 4160, 4310, 5120, 5603, 6656, 6896, 8320, 8620, 11206, 13312, 13792, 16640, 17240, 22412, 27584, 28015, 33280, 34480, 44824, 55168, 56030, 66560, 68960, 89648, 110336, 112060, 137920, 179296, 220672, 224120, 275840, 358592, 441344, 448240, 551680, 717184, 896480, 1103360, 1434368, 1792960, 2206720, 2868736, 3585920, 5737472, 7171840, 14343680, 28687360]

約数ペア:

[(1, 28687360), (2, 14343680), (4, 7171840), (5, 5737472), (8, 3585920), (10, 2868736), (13, 2206720), (16, 1792960), (20, 1434368), (26, 1103360), (32, 896480), (40, 717184), (52, 551680), (64, 448240), (65, 441344), (80, 358592), (104, 275840), (128, 224120), (130, 220672), (160, 179296), (208, 137920), (256, 112060), (260, 110336), (320, 89648), (416, 68960), (431, 66560), (512, 56030), (520, 55168), (640, 44824), (832, 34480), (862, 33280), (1024, 28015), (1040, 27584), (1280, 22412), (1664, 17240), (1724, 16640), (2080, 13792), (2155, 13312), (2560, 11206), (3328, 8620), (3448, 8320), (4160, 6896), (4310, 6656), (5120, 5603)]