1279742440

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{74231}}^1$

素因数の和:74673

約数の個数: 32

約数和(自身を含む): 2886140160

約数和(自身を除く): 1606397720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 4310, 8620, 17240, 74231, 148462, 296924, 371155, 593848, 742310, 1484620, 2969240, 31993561, 63987122, 127974244, 159967805, 255948488, 319935610, 639871220, 1279742440]

約数ペア:

[(1, 1279742440), (2, 639871220), (4, 319935610), (5, 255948488), (8, 159967805), (10, 127974244), (20, 63987122), (40, 31993561), (431, 2969240), (862, 1484620), (1724, 742310), (2155, 593848), (3448, 371155), (4310, 296924), (8620, 148462), (17240, 74231)]