254686520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{431}}^1$

素因数の和:549

約数の個数: 128

約数和(自身を含む): 671846400

約数和(自身を除く): 417159880

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 79, 85, 88, 110, 136, 158, 170, 187, 220, 316, 340, 374, 395, 431, 440, 632, 680, 748, 790, 862, 869, 935, 1343, 1496, 1580, 1724, 1738, 1870, 2155, 2686, 3160, 3448, 3476, 3740, 4310, 4345, 4741, 5372, 6715, 6952, 7327, 7480, 8620, 8690, 9482, 10744, 13430, 14654, 14773, 17240, 17380, 18964, 23705, 26860, 29308, 29546, 34049, 34760, 36635, 37928, 47410, 53720, 58616, 59092, 68098, 73270, 73865, 80597, 94820, 118184, 136196, 146540, 147730, 161194, 170245, 189640, 272392, 293080, 295460, 322388, 340490, 374539, 402985, 578833, 590920, 644776, 680980, 749078, 805970, 1157666, 1361960, 1498156, 1611940, 1872695, 2315332, 2894165, 2996312, 3223880, 3745390, 4630664, 5788330, 6367163, 7490780, 11576660, 12734326, 14981560, 23153320, 25468652, 31835815, 50937304, 63671630, 127343260, 254686520]

約数ペア:

[(1, 254686520), (2, 127343260), (4, 63671630), (5, 50937304), (8, 31835815), (10, 25468652), (11, 23153320), (17, 14981560), (20, 12734326), (22, 11576660), (34, 7490780), (40, 6367163), (44, 5788330), (55, 4630664), (68, 3745390), (79, 3223880), (85, 2996312), (88, 2894165), (110, 2315332), (136, 1872695), (158, 1611940), (170, 1498156), (187, 1361960), (220, 1157666), (316, 805970), (340, 749078), (374, 680980), (395, 644776), (431, 590920), (440, 578833), (632, 402985), (680, 374539), (748, 340490), (790, 322388), (862, 295460), (869, 293080), (935, 272392), (1343, 189640), (1496, 170245), (1580, 161194), (1724, 147730), (1738, 146540), (1870, 136196), (2155, 118184), (2686, 94820), (3160, 80597), (3448, 73865), (3476, 73270), (3740, 68098), (4310, 59092), (4345, 58616), (4741, 53720), (5372, 47410), (6715, 37928), (6952, 36635), (7327, 34760), (7480, 34049), (8620, 29546), (8690, 29308), (9482, 26860), (10744, 23705), (13430, 18964), (14654, 17380), (14773, 17240)]