259104820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{61}}^1$

素因数の和:162

約数の個数: 144

約数和(自身を含む): 651614544

約数和(自身を除く): 392509724

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 31, 34, 52, 61, 62, 65, 68, 85, 122, 124, 130, 155, 170, 221, 244, 260, 305, 310, 340, 403, 442, 527, 610, 620, 793, 806, 884, 961, 1037, 1054, 1105, 1220, 1586, 1612, 1891, 1922, 2015, 2074, 2108, 2210, 2635, 3172, 3782, 3844, 3965, 4030, 4148, 4420, 4805, 5185, 5270, 6851, 7564, 7930, 8060, 9455, 9610, 10370, 10540, 12493, 13481, 13702, 15860, 16337, 18910, 19220, 20740, 24583, 24986, 26962, 27404, 32147, 32674, 34255, 37820, 49166, 49972, 53924, 58621, 62465, 64294, 65348, 67405, 68510, 81685, 98332, 117242, 122915, 124930, 128588, 134810, 137020, 160735, 163370, 212381, 234484, 245830, 249860, 269620, 293105, 321470, 326740, 417911, 424762, 491660, 586210, 642940, 762073, 835822, 849524, 996557, 1061905, 1172420, 1524146, 1671644, 1993114, 2089555, 2123810, 3048292, 3810365, 3986228, 4179110, 4247620, 4982785, 7620730, 8358220, 9965570, 12955241, 15241460, 19931140, 25910482, 51820964, 64776205, 129552410, 259104820]

約数ペア:

[(1, 259104820), (2, 129552410), (4, 64776205), (5, 51820964), (10, 25910482), (13, 19931140), (17, 15241460), (20, 12955241), (26, 9965570), (31, 8358220), (34, 7620730), (52, 4982785), (61, 4247620), (62, 4179110), (65, 3986228), (68, 3810365), (85, 3048292), (122, 2123810), (124, 2089555), (130, 1993114), (155, 1671644), (170, 1524146), (221, 1172420), (244, 1061905), (260, 996557), (305, 849524), (310, 835822), (340, 762073), (403, 642940), (442, 586210), (527, 491660), (610, 424762), (620, 417911), (793, 326740), (806, 321470), (884, 293105), (961, 269620), (1037, 249860), (1054, 245830), (1105, 234484), (1220, 212381), (1586, 163370), (1612, 160735), (1891, 137020), (1922, 134810), (2015, 128588), (2074, 124930), (2108, 122915), (2210, 117242), (2635, 98332), (3172, 81685), (3782, 68510), (3844, 67405), (3965, 65348), (4030, 64294), (4148, 62465), (4420, 58621), (4805, 53924), (5185, 49972), (5270, 49166), (6851, 37820), (7564, 34255), (7930, 32674), (8060, 32147), (9455, 27404), (9610, 26962), (10370, 24986), (10540, 24583), (12493, 20740), (13481, 19220), (13702, 18910), (15860, 16337)]