20374935

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1459}}^1$

素因数の和:1500

約数の個数: 48

約数和(自身を含む): 39945600

約数和(自身を除く): 19570665

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 245, 285, 399, 665, 735, 931, 1459, 1995, 2793, 4377, 4655, 7295, 10213, 13965, 21885, 27721, 30639, 51065, 71491, 83163, 138605, 153195, 194047, 214473, 357455, 415815, 582141, 970235, 1072365, 1358329, 2910705, 4074987, 6791645, 20374935]

約数ペア:

[(1, 20374935), (3, 6791645), (5, 4074987), (7, 2910705), (15, 1358329), (19, 1072365), (21, 970235), (35, 582141), (49, 415815), (57, 357455), (95, 214473), (105, 194047), (133, 153195), (147, 138605), (245, 83163), (285, 71491), (399, 51065), (665, 30639), (735, 27721), (931, 21885), (1459, 13965), (1995, 10213), (2793, 7295), (4377, 4655)]