19703775

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2887}}^1$

素因数の和:2920

約数の個数: 48

約数和(自身を含む): 40108544

約数和(自身を除く): 20404769

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 35, 39, 65, 75, 91, 105, 175, 195, 273, 325, 455, 525, 975, 1365, 2275, 2887, 6825, 8661, 14435, 20209, 37531, 43305, 60627, 72175, 101045, 112593, 187655, 216525, 262717, 303135, 505225, 562965, 788151, 938275, 1313585, 1515675, 2814825, 3940755, 6567925, 19703775]

約数ペア:

[(1, 19703775), (3, 6567925), (5, 3940755), (7, 2814825), (13, 1515675), (15, 1313585), (21, 938275), (25, 788151), (35, 562965), (39, 505225), (65, 303135), (75, 262717), (91, 216525), (105, 187655), (175, 112593), (195, 101045), (273, 72175), (325, 60627), (455, 43305), (525, 37531), (975, 20209), (1365, 14435), (2275, 8661), (2887, 6825)]