280304680

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{547}}^1\times {\mathrm{557}}^1$

素因数の和:1138

約数の個数: 64

約数和(自身を含む): 660493440

約数和(自身を除く): 380188760

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 547, 557, 920, 1094, 1114, 2188, 2228, 2735, 2785, 4376, 4456, 5470, 5570, 10940, 11140, 12581, 12811, 21880, 22280, 25162, 25622, 50324, 51244, 62905, 64055, 100648, 102488, 125810, 128110, 251620, 256220, 304679, 503240, 512440, 609358, 1218716, 1523395, 2437432, 3046790, 6093580, 7007617, 12187160, 14015234, 28030468, 35038085, 56060936, 70076170, 140152340, 280304680]

約数ペア:

[(1, 280304680), (2, 140152340), (4, 70076170), (5, 56060936), (8, 35038085), (10, 28030468), (20, 14015234), (23, 12187160), (40, 7007617), (46, 6093580), (92, 3046790), (115, 2437432), (184, 1523395), (230, 1218716), (460, 609358), (547, 512440), (557, 503240), (920, 304679), (1094, 256220), (1114, 251620), (2188, 128110), (2228, 125810), (2735, 102488), (2785, 100648), (4376, 64055), (4456, 62905), (5470, 51244), (5570, 50324), (10940, 25622), (11140, 25162), (12581, 22280), (12811, 21880)]