978012980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{15913}}^1$

素因数の和:16368

約数の個数: 48

約数和(自身を含む): 2352725760

約数和(自身を除く): 1374712780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 439, 878, 1756, 2195, 3073, 4390, 6146, 8780, 12292, 15365, 15913, 30730, 31826, 61460, 63652, 79565, 111391, 159130, 222782, 318260, 445564, 556955, 1113910, 2227820, 6985807, 13971614, 27943228, 34929035, 48900649, 69858070, 97801298, 139716140, 195602596, 244503245, 489006490, 978012980]

約数ペア:

[(1, 978012980), (2, 489006490), (4, 244503245), (5, 195602596), (7, 139716140), (10, 97801298), (14, 69858070), (20, 48900649), (28, 34929035), (35, 27943228), (70, 13971614), (140, 6985807), (439, 2227820), (878, 1113910), (1756, 556955), (2195, 445564), (3073, 318260), (4390, 222782), (6146, 159130), (8780, 111391), (12292, 79565), (15365, 63652), (15913, 61460), (30730, 31826)]