279168820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{7759}}^1$

素因数の和:8032

約数の個数: 48

約数和(自身を含む): 672698880

約数和(自身を除く): 393530060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 514, 1028, 1285, 1799, 2570, 3598, 5140, 7196, 7759, 8995, 15518, 17990, 31036, 35980, 38795, 54313, 77590, 108626, 155180, 217252, 271565, 543130, 1086260, 1994063, 3988126, 7976252, 9970315, 13958441, 19940630, 27916882, 39881260, 55833764, 69792205, 139584410, 279168820]

約数ペア:

[(1, 279168820), (2, 139584410), (4, 69792205), (5, 55833764), (7, 39881260), (10, 27916882), (14, 19940630), (20, 13958441), (28, 9970315), (35, 7976252), (70, 3988126), (140, 1994063), (257, 1086260), (514, 543130), (1028, 271565), (1285, 217252), (1799, 155180), (2570, 108626), (3598, 77590), (5140, 54313), (7196, 38795), (7759, 35980), (8995, 31036), (15518, 17990)]