40416520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 95800320

約数和(自身を除く): 55383800

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 197, 223, 230, 394, 446, 460, 788, 892, 920, 985, 1115, 1576, 1784, 1970, 2230, 3940, 4460, 4531, 5129, 7880, 8920, 9062, 10258, 18124, 20516, 22655, 25645, 36248, 41032, 43931, 45310, 51290, 87862, 90620, 102580, 175724, 181240, 205160, 219655, 351448, 439310, 878620, 1010413, 1757240, 2020826, 4041652, 5052065, 8083304, 10104130, 20208260, 40416520]

約数ペア:

[(1, 40416520), (2, 20208260), (4, 10104130), (5, 8083304), (8, 5052065), (10, 4041652), (20, 2020826), (23, 1757240), (40, 1010413), (46, 878620), (92, 439310), (115, 351448), (184, 219655), (197, 205160), (223, 181240), (230, 175724), (394, 102580), (446, 90620), (460, 87862), (788, 51290), (892, 45310), (920, 43931), (985, 41032), (1115, 36248), (1576, 25645), (1784, 22655), (1970, 20516), (2230, 18124), (3940, 10258), (4460, 9062), (4531, 8920), (5129, 7880)]