65440480

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{491}}^1$

素因数の和:537

約数の個数: 144

約数和(自身を含む): 190811376

約数和(自身を除く): 125370896

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 160, 170, 196, 224, 238, 245, 272, 280, 340, 392, 476, 490, 491, 544, 560, 595, 680, 784, 833, 952, 980, 982, 1120, 1190, 1360, 1568, 1666, 1904, 1960, 1964, 2380, 2455, 2720, 3332, 3437, 3808, 3920, 3928, 4165, 4760, 4910, 6664, 6874, 7840, 7856, 8330, 8347, 9520, 9820, 13328, 13748, 15712, 16660, 16694, 17185, 19040, 19640, 24059, 26656, 27496, 33320, 33388, 34370, 39280, 41735, 48118, 54992, 58429, 66640, 66776, 68740, 78560, 83470, 96236, 109984, 116858, 120295, 133280, 133552, 137480, 166940, 192472, 233716, 240590, 267104, 274960, 292145, 333880, 384944, 409003, 467432, 481180, 549920, 584290, 667760, 769888, 818006, 934864, 962360, 1168580, 1335520, 1636012, 1869728, 1924720, 2045015, 2337160, 3272024, 3849440, 4090030, 4674320, 6544048, 8180060, 9348640, 13088096, 16360120, 32720240, 65440480]

約数ペア:

[(1, 65440480), (2, 32720240), (4, 16360120), (5, 13088096), (7, 9348640), (8, 8180060), (10, 6544048), (14, 4674320), (16, 4090030), (17, 3849440), (20, 3272024), (28, 2337160), (32, 2045015), (34, 1924720), (35, 1869728), (40, 1636012), (49, 1335520), (56, 1168580), (68, 962360), (70, 934864), (80, 818006), (85, 769888), (98, 667760), (112, 584290), (119, 549920), (136, 481180), (140, 467432), (160, 409003), (170, 384944), (196, 333880), (224, 292145), (238, 274960), (245, 267104), (272, 240590), (280, 233716), (340, 192472), (392, 166940), (476, 137480), (490, 133552), (491, 133280), (544, 120295), (560, 116858), (595, 109984), (680, 96236), (784, 83470), (833, 78560), (952, 68740), (980, 66776), (982, 66640), (1120, 58429), (1190, 54992), (1360, 48118), (1568, 41735), (1666, 39280), (1904, 34370), (1960, 33388), (1964, 33320), (2380, 27496), (2455, 26656), (2720, 24059), (3332, 19640), (3437, 19040), (3808, 17185), (3920, 16694), (3928, 16660), (4165, 15712), (4760, 13748), (4910, 13328), (6664, 9820), (6874, 9520), (7840, 8347), (7856, 8330)]