21077175

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2113}}^1$

素因数の和:2152

約数の個数: 48

約数和(自身を含む): 41941760

約数和(自身を除く): 20864585

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 95, 105, 133, 175, 285, 399, 475, 525, 665, 1425, 1995, 2113, 3325, 6339, 9975, 10565, 14791, 31695, 40147, 44373, 52825, 73955, 120441, 158475, 200735, 221865, 281029, 369775, 602205, 843087, 1003675, 1109325, 1405145, 3011025, 4215435, 7025725, 21077175]

約数ペア:

[(1, 21077175), (3, 7025725), (5, 4215435), (7, 3011025), (15, 1405145), (19, 1109325), (21, 1003675), (25, 843087), (35, 602205), (57, 369775), (75, 281029), (95, 221865), (105, 200735), (133, 158475), (175, 120441), (285, 73955), (399, 52825), (475, 44373), (525, 40147), (665, 31695), (1425, 14791), (1995, 10565), (2113, 9975), (3325, 6339)]