2011147775

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{12451}}^1$

素因数の和:12552

約数の個数: 48

約数和(自身を含む): 3112800768

約数和(自身を除く): 1101652993

約数列:

[1, 5, 7, 13, 25, 35, 65, 71, 91, 175, 325, 355, 455, 497, 923, 1775, 2275, 2485, 4615, 6461, 12425, 12451, 23075, 32305, 62255, 87157, 161525, 161863, 311275, 435785, 809315, 884021, 1133041, 2178925, 4046575, 4420105, 5665205, 6188147, 11492273, 22100525, 28326025, 30940735, 57461365, 80445911, 154703675, 287306825, 402229555, 2011147775]

約数ペア:

[(1, 2011147775), (5, 402229555), (7, 287306825), (13, 154703675), (25, 80445911), (35, 57461365), (65, 30940735), (71, 28326025), (91, 22100525), (175, 11492273), (325, 6188147), (355, 5665205), (455, 4420105), (497, 4046575), (923, 2178925), (1775, 1133041), (2275, 884021), (2485, 809315), (4615, 435785), (6461, 311275), (12425, 161863), (12451, 161525), (23075, 87157), (32305, 62255)]