78821960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3163}}^1$

素因数の和:3270

約数の個数: 64

約数和(自身を含む): 205027200

約数和(自身を除く): 126205240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 89, 140, 178, 280, 356, 445, 623, 712, 890, 1246, 1780, 2492, 3115, 3163, 3560, 4984, 6230, 6326, 12460, 12652, 15815, 22141, 24920, 25304, 31630, 44282, 63260, 88564, 110705, 126520, 177128, 221410, 281507, 442820, 563014, 885640, 1126028, 1407535, 1970549, 2252056, 2815070, 3941098, 5630140, 7882196, 9852745, 11260280, 15764392, 19705490, 39410980, 78821960]

約数ペア:

[(1, 78821960), (2, 39410980), (4, 19705490), (5, 15764392), (7, 11260280), (8, 9852745), (10, 7882196), (14, 5630140), (20, 3941098), (28, 2815070), (35, 2252056), (40, 1970549), (56, 1407535), (70, 1126028), (89, 885640), (140, 563014), (178, 442820), (280, 281507), (356, 221410), (445, 177128), (623, 126520), (712, 110705), (890, 88564), (1246, 63260), (1780, 44282), (2492, 31630), (3115, 25304), (3163, 24920), (3560, 22141), (4984, 15815), (6230, 12652), (6326, 12460)]