68808740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1$

素因数の和:538

約数の個数: 144

約数和(自身を含む): 197878464

約数和(自身を除く): 129069724

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 49, 52, 55, 65, 70, 77, 91, 98, 110, 130, 140, 143, 154, 182, 196, 220, 245, 260, 286, 308, 364, 385, 455, 490, 491, 539, 572, 637, 715, 770, 910, 980, 982, 1001, 1078, 1274, 1430, 1540, 1820, 1964, 2002, 2156, 2455, 2548, 2695, 2860, 3185, 3437, 4004, 4910, 5005, 5390, 5401, 6370, 6383, 6874, 7007, 9820, 10010, 10780, 10802, 12740, 12766, 13748, 14014, 17185, 20020, 21604, 24059, 25532, 27005, 28028, 31915, 34370, 35035, 37807, 44681, 48118, 54010, 63830, 68740, 70070, 70213, 75614, 89362, 96236, 108020, 120295, 127660, 140140, 140426, 151228, 178724, 189035, 223405, 240590, 264649, 280852, 312767, 351065, 378070, 446810, 481180, 491491, 529298, 625534, 702130, 756140, 893620, 982982, 1058596, 1251068, 1323245, 1404260, 1563835, 1965964, 2457455, 2646490, 3127670, 3440437, 4914910, 5292980, 6255340, 6880874, 9829820, 13761748, 17202185, 34404370, 68808740]

約数ペア:

[(1, 68808740), (2, 34404370), (4, 17202185), (5, 13761748), (7, 9829820), (10, 6880874), (11, 6255340), (13, 5292980), (14, 4914910), (20, 3440437), (22, 3127670), (26, 2646490), (28, 2457455), (35, 1965964), (44, 1563835), (49, 1404260), (52, 1323245), (55, 1251068), (65, 1058596), (70, 982982), (77, 893620), (91, 756140), (98, 702130), (110, 625534), (130, 529298), (140, 491491), (143, 481180), (154, 446810), (182, 378070), (196, 351065), (220, 312767), (245, 280852), (260, 264649), (286, 240590), (308, 223405), (364, 189035), (385, 178724), (455, 151228), (490, 140426), (491, 140140), (539, 127660), (572, 120295), (637, 108020), (715, 96236), (770, 89362), (910, 75614), (980, 70213), (982, 70070), (1001, 68740), (1078, 63830), (1274, 54010), (1430, 48118), (1540, 44681), (1820, 37807), (1964, 35035), (2002, 34370), (2156, 31915), (2455, 28028), (2548, 27005), (2695, 25532), (2860, 24059), (3185, 21604), (3437, 20020), (4004, 17185), (4910, 14014), (5005, 13748), (5390, 12766), (5401, 12740), (6370, 10802), (6383, 10780), (6874, 10010), (7007, 9820)]