20123775

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{4259}}^1$

素因数の和:4285

約数の個数: 48

約数和(自身を含む): 42259200

約数和(自身を除く): 22135425

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 105, 135, 175, 189, 225, 315, 525, 675, 945, 1575, 4259, 4725, 12777, 21295, 29813, 38331, 63885, 89439, 106475, 114993, 149065, 191655, 268317, 319425, 447195, 574965, 745325, 804951, 958275, 1341585, 2235975, 2874825, 4024755, 6707925, 20123775]

約数ペア:

[(1, 20123775), (3, 6707925), (5, 4024755), (7, 2874825), (9, 2235975), (15, 1341585), (21, 958275), (25, 804951), (27, 745325), (35, 574965), (45, 447195), (63, 319425), (75, 268317), (105, 191655), (135, 149065), (175, 114993), (189, 106475), (225, 89439), (315, 63885), (525, 38331), (675, 29813), (945, 21295), (1575, 12777), (4259, 4725)]