261655940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{11059}}^1$

素因数の和:11101

約数の個数: 72

約数和(自身を含む): 680057280

約数和(自身を除く): 418401340

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 169, 182, 260, 338, 364, 455, 676, 845, 910, 1183, 1690, 1820, 2366, 3380, 4732, 5915, 11059, 11830, 22118, 23660, 44236, 55295, 77413, 110590, 143767, 154826, 221180, 287534, 309652, 387065, 575068, 718835, 774130, 1006369, 1437670, 1548260, 1868971, 2012738, 2875340, 3737942, 4025476, 5031845, 7475884, 9344855, 10063690, 13082797, 18689710, 20127380, 26165594, 37379420, 52331188, 65413985, 130827970, 261655940]

約数ペア:

[(1, 261655940), (2, 130827970), (4, 65413985), (5, 52331188), (7, 37379420), (10, 26165594), (13, 20127380), (14, 18689710), (20, 13082797), (26, 10063690), (28, 9344855), (35, 7475884), (52, 5031845), (65, 4025476), (70, 3737942), (91, 2875340), (130, 2012738), (140, 1868971), (169, 1548260), (182, 1437670), (260, 1006369), (338, 774130), (364, 718835), (455, 575068), (676, 387065), (845, 309652), (910, 287534), (1183, 221180), (1690, 154826), (1820, 143767), (2366, 110590), (3380, 77413), (4732, 55295), (5915, 44236), (11059, 23660), (11830, 22118)]