261642616

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{40031}}^1$

素因数の和:40099

約数の個数: 32

約数和(自身を含む): 528422400

約数和(自身を除く): 266779784

約数列:

[1, 2, 4, 8, 19, 38, 43, 76, 86, 152, 172, 344, 817, 1634, 3268, 6536, 40031, 80062, 160124, 320248, 760589, 1521178, 1721333, 3042356, 3442666, 6084712, 6885332, 13770664, 32705327, 65410654, 130821308, 261642616]

約数ペア:

[(1, 261642616), (2, 130821308), (4, 65410654), (8, 32705327), (19, 13770664), (38, 6885332), (43, 6084712), (76, 3442666), (86, 3042356), (152, 1721333), (172, 1521178), (344, 760589), (817, 320248), (1634, 160124), (3268, 80062), (6536, 40031)]