261327768

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{659}}^1$

素因数の和:753

約数の個数: 128

約数和(自身を含む): 745113600

約数和(自身を除く): 483785832

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 31, 39, 41, 52, 62, 78, 82, 93, 104, 123, 124, 156, 164, 186, 246, 248, 312, 328, 372, 403, 492, 533, 659, 744, 806, 984, 1066, 1209, 1271, 1318, 1599, 1612, 1977, 2132, 2418, 2542, 2636, 3198, 3224, 3813, 3954, 4264, 4836, 5084, 5272, 6396, 7626, 7908, 8567, 9672, 10168, 12792, 15252, 15816, 16523, 17134, 20429, 25701, 27019, 30504, 33046, 34268, 40858, 49569, 51402, 54038, 61287, 66092, 68536, 81057, 81716, 99138, 102804, 108076, 122574, 132184, 162114, 163432, 198276, 205608, 216152, 245148, 265577, 324228, 351247, 396552, 490296, 531154, 648456, 702494, 796731, 837589, 1053741, 1062308, 1404988, 1593462, 1675178, 2107482, 2124616, 2512767, 2809976, 3186924, 3350356, 4214964, 5025534, 6373848, 6700712, 8429928, 10051068, 10888657, 20102136, 21777314, 32665971, 43554628, 65331942, 87109256, 130663884, 261327768]

約数ペア:

[(1, 261327768), (2, 130663884), (3, 87109256), (4, 65331942), (6, 43554628), (8, 32665971), (12, 21777314), (13, 20102136), (24, 10888657), (26, 10051068), (31, 8429928), (39, 6700712), (41, 6373848), (52, 5025534), (62, 4214964), (78, 3350356), (82, 3186924), (93, 2809976), (104, 2512767), (123, 2124616), (124, 2107482), (156, 1675178), (164, 1593462), (186, 1404988), (246, 1062308), (248, 1053741), (312, 837589), (328, 796731), (372, 702494), (403, 648456), (492, 531154), (533, 490296), (659, 396552), (744, 351247), (806, 324228), (984, 265577), (1066, 245148), (1209, 216152), (1271, 205608), (1318, 198276), (1599, 163432), (1612, 162114), (1977, 132184), (2132, 122574), (2418, 108076), (2542, 102804), (2636, 99138), (3198, 81716), (3224, 81057), (3813, 68536), (3954, 66092), (4264, 61287), (4836, 54038), (5084, 51402), (5272, 49569), (6396, 40858), (7626, 34268), (7908, 33046), (8567, 30504), (9672, 27019), (10168, 25701), (12792, 20429), (15252, 17134), (15816, 16523)]