31324720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:219

約数の個数: 120

約数和(自身を含む): 86766768

約数和(自身を除く): 55442048

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 61, 70, 80, 98, 112, 122, 131, 140, 196, 244, 245, 262, 280, 305, 392, 427, 488, 490, 524, 560, 610, 655, 784, 854, 917, 976, 980, 1048, 1220, 1310, 1708, 1834, 1960, 2096, 2135, 2440, 2620, 2989, 3416, 3668, 3920, 4270, 4585, 4880, 5240, 5978, 6419, 6832, 7336, 7991, 8540, 9170, 10480, 11956, 12838, 14672, 14945, 15982, 17080, 18340, 23912, 25676, 29890, 31964, 32095, 34160, 36680, 39955, 47824, 51352, 55937, 59780, 63928, 64190, 73360, 79910, 102704, 111874, 119560, 127856, 128380, 159820, 223748, 239120, 256760, 279685, 319640, 391559, 447496, 513520, 559370, 639280, 783118, 894992, 1118740, 1566236, 1957795, 2237480, 3132472, 3915590, 4474960, 6264944, 7831180, 15662360, 31324720]

約数ペア:

[(1, 31324720), (2, 15662360), (4, 7831180), (5, 6264944), (7, 4474960), (8, 3915590), (10, 3132472), (14, 2237480), (16, 1957795), (20, 1566236), (28, 1118740), (35, 894992), (40, 783118), (49, 639280), (56, 559370), (61, 513520), (70, 447496), (80, 391559), (98, 319640), (112, 279685), (122, 256760), (131, 239120), (140, 223748), (196, 159820), (244, 128380), (245, 127856), (262, 119560), (280, 111874), (305, 102704), (392, 79910), (427, 73360), (488, 64190), (490, 63928), (524, 59780), (560, 55937), (610, 51352), (655, 47824), (784, 39955), (854, 36680), (917, 34160), (976, 32095), (980, 31964), (1048, 29890), (1220, 25676), (1310, 23912), (1708, 18340), (1834, 17080), (1960, 15982), (2096, 14945), (2135, 14672), (2440, 12838), (2620, 11956), (2989, 10480), (3416, 9170), (3668, 8540), (3920, 7991), (4270, 7336), (4585, 6832), (4880, 6419), (5240, 5978)]